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-rw-r--r--arch/blackfin/kernel/Makefile5
-rw-r--r--arch/blackfin/kernel/bfin_dma_5xx.c81
-rw-r--r--arch/blackfin/kernel/bfin_gpio.c549
-rw-r--r--arch/blackfin/kernel/bfin_ksyms.c1
-rw-r--r--arch/blackfin/kernel/cacheinit.c5
-rw-r--r--arch/blackfin/kernel/cplbinit.c7
-rw-r--r--arch/blackfin/kernel/early_printk.c214
-rw-r--r--arch/blackfin/kernel/irqchip.c12
-rw-r--r--arch/blackfin/kernel/process.c28
-rw-r--r--arch/blackfin/kernel/ptrace.c24
-rw-r--r--arch/blackfin/kernel/reboot.c78
-rw-r--r--arch/blackfin/kernel/setup.c90
-rw-r--r--arch/blackfin/kernel/traps.c110
-rw-r--r--arch/blackfin/kernel/vmlinux.lds.S48
14 files changed, 1001 insertions, 251 deletions
diff --git a/arch/blackfin/kernel/Makefile b/arch/blackfin/kernel/Makefile
index f429ebc3a96..8aeb6066b19 100644
--- a/arch/blackfin/kernel/Makefile
+++ b/arch/blackfin/kernel/Makefile
@@ -7,11 +7,10 @@ extra-y := init_task.o vmlinux.lds
obj-y := \
entry.o process.o bfin_ksyms.o ptrace.o setup.o signal.o \
sys_bfin.o time.o traps.o irqchip.o dma-mapping.o flat.o \
- fixed_code.o cplbinit.o cacheinit.o
+ fixed_code.o cplbinit.o cacheinit.o reboot.o bfin_gpio.o
-obj-$(CONFIG_BF53x) += bfin_gpio.o
-obj-$(CONFIG_BF561) += bfin_gpio.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_BFIN_DMA_5XX) += bfin_dma_5xx.o
obj-$(CONFIG_DUAL_CORE_TEST_MODULE) += dualcore_test.o
obj-$(CONFIG_KGDB) += kgdb.o
+obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index 7cf02f02a1d..e19164fb4cd 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -73,6 +73,11 @@ static int __init blackfin_dma_init(void)
/* Mark MEMDMA Channel 0 as requested since we're using it internally */
dma_ch[CH_MEM_STREAM0_DEST].chan_status = DMA_CHANNEL_REQUESTED;
dma_ch[CH_MEM_STREAM0_SRC].chan_status = DMA_CHANNEL_REQUESTED;
+
+#if defined(CONFIG_DEB_DMA_URGENT)
+ bfin_write_EBIU_DDRQUE(bfin_read_EBIU_DDRQUE()
+ | DEB1_URGENT | DEB2_URGENT | DEB3_URGENT);
+#endif
return 0;
}
@@ -265,10 +270,23 @@ void set_dma_next_desc_addr(unsigned int channel, unsigned long addr)
dma_ch[channel].regs->next_desc_ptr = addr;
SSYNC();
- pr_debug("set_dma_start_addr() : END\n");
+ pr_debug("set_dma_next_desc_addr() : END\n");
}
EXPORT_SYMBOL(set_dma_next_desc_addr);
+void set_dma_curr_desc_addr(unsigned int channel, unsigned long addr)
+{
+ pr_debug("set_dma_curr_desc_addr() : BEGIN \n");
+
+ BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
+ && channel < MAX_BLACKFIN_DMA_CHANNEL));
+
+ dma_ch[channel].regs->curr_desc_ptr = addr;
+ SSYNC();
+ pr_debug("set_dma_curr_desc_addr() : END\n");
+}
+EXPORT_SYMBOL(set_dma_curr_desc_addr);
+
void set_dma_x_count(unsigned int channel, unsigned short x_count)
{
BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
@@ -345,6 +363,16 @@ void set_dma_sg(unsigned int channel, struct dmasg *sg, int nr_sg)
}
EXPORT_SYMBOL(set_dma_sg);
+void set_dma_curr_addr(unsigned int channel, unsigned long addr)
+{
+ BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
+ && channel < MAX_BLACKFIN_DMA_CHANNEL));
+
+ dma_ch[channel].regs->curr_addr_ptr = addr;
+ SSYNC();
+}
+EXPORT_SYMBOL(set_dma_curr_addr);
+
/*------------------------------------------------------------------------------
* Get the DMA status of a specific DMA channel from the system.
*-----------------------------------------------------------------------------*/
@@ -408,6 +436,10 @@ static void *__dma_memcpy(void *dest, const void *src, size_t size)
blackfin_dcache_flush_range((unsigned int)src,
(unsigned int)(src + size));
+ if ((unsigned long)dest < memory_end)
+ blackfin_dcache_invalidate_range((unsigned int)dest,
+ (unsigned int)(dest + size));
+
bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
if ((unsigned long)src < (unsigned long)dest)
@@ -515,6 +547,8 @@ static void *__dma_memcpy(void *dest, const void *src, size_t size)
}
}
+ SSYNC();
+
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE))
;
@@ -524,9 +558,6 @@ static void *__dma_memcpy(void *dest, const void *src, size_t size)
bfin_write_MDMA_S0_CONFIG(0);
bfin_write_MDMA_D0_CONFIG(0);
- if ((unsigned long)dest < memory_end)
- blackfin_dcache_invalidate_range((unsigned int)dest,
- (unsigned int)(dest + size));
local_irq_restore(flags);
return dest;
@@ -555,13 +586,14 @@ void *safe_dma_memcpy(void *dest, const void *src, size_t size)
}
EXPORT_SYMBOL(safe_dma_memcpy);
-void dma_outsb(void __iomem *addr, const void *buf, unsigned short len)
+void dma_outsb(unsigned long addr, const void *buf, unsigned short len)
{
unsigned long flags;
local_irq_save(flags);
- blackfin_dcache_flush_range((unsigned int)buf, (unsigned int)(buf) + len);
+ blackfin_dcache_flush_range((unsigned int)buf,
+ (unsigned int)(buf) + len);
bfin_write_MDMA_D0_START_ADDR(addr);
bfin_write_MDMA_D0_X_COUNT(len);
@@ -576,6 +608,8 @@ void dma_outsb(void __iomem *addr, const void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_8);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_8);
+ SSYNC();
+
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
@@ -588,10 +622,13 @@ void dma_outsb(void __iomem *addr, const void *buf, unsigned short len)
EXPORT_SYMBOL(dma_outsb);
-void dma_insb(const void __iomem *addr, void *buf, unsigned short len)
+void dma_insb(unsigned long addr, void *buf, unsigned short len)
{
unsigned long flags;
+ blackfin_dcache_invalidate_range((unsigned int)buf,
+ (unsigned int)(buf) + len);
+
local_irq_save(flags);
bfin_write_MDMA_D0_START_ADDR(buf);
bfin_write_MDMA_D0_X_COUNT(len);
@@ -606,7 +643,7 @@ void dma_insb(const void __iomem *addr, void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_8);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_8);
- blackfin_dcache_invalidate_range((unsigned int)buf, (unsigned int)(buf) + len);
+ SSYNC();
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
@@ -619,13 +656,14 @@ void dma_insb(const void __iomem *addr, void *buf, unsigned short len)
}
EXPORT_SYMBOL(dma_insb);
-void dma_outsw(void __iomem *addr, const void *buf, unsigned short len)
+void dma_outsw(unsigned long addr, const void *buf, unsigned short len)
{
unsigned long flags;
local_irq_save(flags);
- blackfin_dcache_flush_range((unsigned int)buf, (unsigned int)(buf) + len);
+ blackfin_dcache_flush_range((unsigned int)buf,
+ (unsigned int)(buf) + len * sizeof(short));
bfin_write_MDMA_D0_START_ADDR(addr);
bfin_write_MDMA_D0_X_COUNT(len);
@@ -640,6 +678,8 @@ void dma_outsw(void __iomem *addr, const void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_16);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_16);
+ SSYNC();
+
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
@@ -651,10 +691,13 @@ void dma_outsw(void __iomem *addr, const void *buf, unsigned short len)
}
EXPORT_SYMBOL(dma_outsw);
-void dma_insw(const void __iomem *addr, void *buf, unsigned short len)
+void dma_insw(unsigned long addr, void *buf, unsigned short len)
{
unsigned long flags;
+ blackfin_dcache_invalidate_range((unsigned int)buf,
+ (unsigned int)(buf) + len * sizeof(short));
+
local_irq_save(flags);
bfin_write_MDMA_D0_START_ADDR(buf);
@@ -670,7 +713,7 @@ void dma_insw(const void __iomem *addr, void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_16);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_16);
- blackfin_dcache_invalidate_range((unsigned int)buf, (unsigned int)(buf) + len);
+ SSYNC();
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
@@ -683,13 +726,14 @@ void dma_insw(const void __iomem *addr, void *buf, unsigned short len)
}
EXPORT_SYMBOL(dma_insw);
-void dma_outsl(void __iomem *addr, const void *buf, unsigned short len)
+void dma_outsl(unsigned long addr, const void *buf, unsigned short len)
{
unsigned long flags;
local_irq_save(flags);
- blackfin_dcache_flush_range((unsigned int)buf, (unsigned int)(buf) + len);
+ blackfin_dcache_flush_range((unsigned int)buf,
+ (unsigned int)(buf) + len * sizeof(long));
bfin_write_MDMA_D0_START_ADDR(addr);
bfin_write_MDMA_D0_X_COUNT(len);
@@ -704,6 +748,8 @@ void dma_outsl(void __iomem *addr, const void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_32);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_32);
+ SSYNC();
+
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
@@ -715,10 +761,13 @@ void dma_outsl(void __iomem *addr, const void *buf, unsigned short len)
}
EXPORT_SYMBOL(dma_outsl);
-void dma_insl(const void __iomem *addr, void *buf, unsigned short len)
+void dma_insl(unsigned long addr, void *buf, unsigned short len)
{
unsigned long flags;
+ blackfin_dcache_invalidate_range((unsigned int)buf,
+ (unsigned int)(buf) + len * sizeof(long));
+
local_irq_save(flags);
bfin_write_MDMA_D0_START_ADDR(buf);
@@ -734,7 +783,7 @@ void dma_insl(const void __iomem *addr, void *buf, unsigned short len)
bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_32);
bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_32);
- blackfin_dcache_invalidate_range((unsigned int)buf, (unsigned int)(buf) + len);
+ SSYNC();
while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c
index 5d488ef965c..3fe0cd49e8d 100644
--- a/arch/blackfin/kernel/bfin_gpio.c
+++ b/arch/blackfin/kernel/bfin_gpio.c
@@ -7,7 +7,7 @@
* Description: GPIO Abstraction Layer
*
* Modified:
- * Copyright 2006 Analog Devices Inc.
+ * Copyright 2007 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
@@ -28,9 +28,9 @@
*/
/*
-* Number BF537/6/4 BF561 BF533/2/1
+* Number BF537/6/4 BF561 BF533/2/1 BF549/8/4/2
*
-* GPIO_0 PF0 PF0 PF0
+* GPIO_0 PF0 PF0 PF0 PA0...PJ13
* GPIO_1 PF1 PF1 PF1
* GPIO_2 PF2 PF2 PF2
* GPIO_3 PF3 PF3 PF3
@@ -80,6 +80,7 @@
* GPIO_47 PH15 PF47
*/
+#include <linux/delay.h>
#include <linux/module.h>
#include <linux/err.h>
#include <asm/blackfin.h>
@@ -87,6 +88,36 @@
#include <asm/portmux.h>
#include <linux/irq.h>
+#if ANOMALY_05000311 || ANOMALY_05000323
+enum {
+ AWA_data = SYSCR,
+ AWA_data_clear = SYSCR,
+ AWA_data_set = SYSCR,
+ AWA_toggle = SYSCR,
+ AWA_maska = UART_SCR,
+ AWA_maska_clear = UART_SCR,
+ AWA_maska_set = UART_SCR,
+ AWA_maska_toggle = UART_SCR,
+ AWA_maskb = UART_GCTL,
+ AWA_maskb_clear = UART_GCTL,
+ AWA_maskb_set = UART_GCTL,
+ AWA_maskb_toggle = UART_GCTL,
+ AWA_dir = SPORT1_STAT,
+ AWA_polar = SPORT1_STAT,
+ AWA_edge = SPORT1_STAT,
+ AWA_both = SPORT1_STAT,
+#if ANOMALY_05000311
+ AWA_inen = TIMER_ENABLE,
+#elif ANOMALY_05000323
+ AWA_inen = DMA1_1_CONFIG,
+#endif
+};
+ /* Anomaly Workaround */
+#define AWA_DUMMY_READ(name) bfin_read16(AWA_ ## name)
+#else
+#define AWA_DUMMY_READ(...) do { } while (0)
+#endif
+
#ifdef BF533_FAMILY
static struct gpio_port_t *gpio_bankb[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
(struct gpio_port_t *) FIO_FLAG_D,
@@ -116,11 +147,31 @@ static struct gpio_port_t *gpio_bankb[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
};
#endif
+#ifdef BF548_FAMILY
+static struct gpio_port_t *gpio_array[gpio_bank(MAX_BLACKFIN_GPIOS)] = {
+ (struct gpio_port_t *)PORTA_FER,
+ (struct gpio_port_t *)PORTB_FER,
+ (struct gpio_port_t *)PORTC_FER,
+ (struct gpio_port_t *)PORTD_FER,
+ (struct gpio_port_t *)PORTE_FER,
+ (struct gpio_port_t *)PORTF_FER,
+ (struct gpio_port_t *)PORTG_FER,
+ (struct gpio_port_t *)PORTH_FER,
+ (struct gpio_port_t *)PORTI_FER,
+ (struct gpio_port_t *)PORTJ_FER,
+};
+#endif
+
static unsigned short reserved_gpio_map[gpio_bank(MAX_BLACKFIN_GPIOS)];
static unsigned short reserved_peri_map[gpio_bank(MAX_BLACKFIN_GPIOS + 16)];
-char *str_ident = NULL;
-#define RESOURCE_LABEL_SIZE 16
+#define MAX_RESOURCES 256
+#define RESOURCE_LABEL_SIZE 16
+
+struct str_ident {
+ char name[RESOURCE_LABEL_SIZE];
+} *str_ident;
+
#ifdef CONFIG_PM
static unsigned short wakeup_map[gpio_bank(MAX_BLACKFIN_GPIOS)];
@@ -141,21 +192,32 @@ static unsigned int sic_iwr_irqs[gpio_bank(MAX_BLACKFIN_GPIOS)] = {IRQ_PROG0_INT
#endif /* CONFIG_PM */
+#if defined(BF548_FAMILY)
+inline int check_gpio(unsigned short gpio)
+{
+ if (gpio == GPIO_PB15 || gpio == GPIO_PC14 || gpio == GPIO_PC15
+ || gpio == GPIO_PH14 || gpio == GPIO_PH15
+ || gpio == GPIO_PJ14 || gpio == GPIO_PJ15
+ || gpio > MAX_BLACKFIN_GPIOS)
+ return -EINVAL;
+ return 0;
+}
+#else
inline int check_gpio(unsigned short gpio)
{
if (gpio >= MAX_BLACKFIN_GPIOS)
return -EINVAL;
return 0;
}
+#endif
static void set_label(unsigned short ident, const char *label)
{
if (label && str_ident) {
- strncpy(str_ident + ident * RESOURCE_LABEL_SIZE, label,
+ strncpy(str_ident[ident].name, label,
RESOURCE_LABEL_SIZE);
- str_ident[ident * RESOURCE_LABEL_SIZE +
- RESOURCE_LABEL_SIZE - 1] = 0;
+ str_ident[ident].name[RESOURCE_LABEL_SIZE - 1] = 0;
}
}
@@ -164,14 +226,13 @@ static char *get_label(unsigned short ident)
if (!str_ident)
return "UNKNOWN";
- return (str_ident[ident * RESOURCE_LABEL_SIZE] ?
- (str_ident + ident * RESOURCE_LABEL_SIZE) : "UNKNOWN");
+ return (*str_ident[ident].name ? str_ident[ident].name : "UNKNOWN");
}
static int cmp_label(unsigned short ident, const char *label)
{
if (label && str_ident)
- return strncmp(str_ident + ident * RESOURCE_LABEL_SIZE,
+ return strncmp(str_ident[ident].name,
label, strlen(label));
else
return -EINVAL;
@@ -181,50 +242,84 @@ static int cmp_label(unsigned short ident, const char *label)
static void port_setup(unsigned short gpio, unsigned short usage)
{
if (!check_gpio(gpio)) {
- if (usage == GPIO_USAGE) {
+ if (usage == GPIO_USAGE)
*port_fer[gpio_bank(gpio)] &= ~gpio_bit(gpio);
- } else
+ else
*port_fer[gpio_bank(gpio)] |= gpio_bit(gpio);
SSYNC();
}
}
+#elif defined(BF548_FAMILY)
+static void port_setup(unsigned short gpio, unsigned short usage)
+{
+ if (usage == GPIO_USAGE)
+ gpio_array[gpio_bank(gpio)]->port_fer &= ~gpio_bit(gpio);
+ else
+ gpio_array[gpio_bank(gpio)]->port_fer |= gpio_bit(gpio);
+ SSYNC();
+}
#else
# define port_setup(...) do { } while (0)
#endif
#ifdef BF537_FAMILY
-
-#define PMUX_LUT_RES 0
-#define PMUX_LUT_OFFSET 1
-#define PMUX_LUT_ENTRIES 41
-#define PMUX_LUT_SIZE 2
-
-static unsigned short port_mux_lut[PMUX_LUT_ENTRIES][PMUX_LUT_SIZE] = {
- {P_PPI0_D13, 11}, {P_PPI0_D14, 11}, {P_PPI0_D15, 11},
- {P_SPORT1_TFS, 11}, {P_SPORT1_TSCLK, 11}, {P_SPORT1_DTPRI, 11},
- {P_PPI0_D10, 10}, {P_PPI0_D11, 10}, {P_PPI0_D12, 10},
- {P_SPORT1_RSCLK, 10}, {P_SPORT1_RFS, 10}, {P_SPORT1_DRPRI, 10},
- {P_PPI0_D8, 9}, {P_PPI0_D9, 9}, {P_SPORT1_DRSEC, 9},
- {P_SPORT1_DTSEC, 9}, {P_TMR2, 8}, {P_PPI0_FS3, 8}, {P_TMR3, 7},
- {P_SPI0_SSEL4, 7}, {P_TMR4, 6}, {P_SPI0_SSEL5, 6}, {P_TMR5, 5},
- {P_SPI0_SSEL6, 5}, {P_UART1_RX, 4}, {P_UART1_TX, 4}, {P_TMR6, 4},
- {P_TMR7, 4}, {P_UART0_RX, 3}, {P_UART0_TX, 3}, {P_DMAR0, 3},
- {P_DMAR1, 3}, {P_SPORT0_DTSEC, 1}, {P_SPORT0_DRSEC, 1},
- {P_CAN0_RX, 1}, {P_CAN0_TX, 1}, {P_SPI0_SSEL7, 1},
- {P_SPORT0_TFS, 0}, {P_SPORT0_DTPRI, 0}, {P_SPI0_SSEL2, 0},
- {P_SPI0_SSEL3, 0}
+static struct {
+ unsigned short res;
+ unsigned short offset;
+} port_mux_lut[] = {
+ {.res = P_PPI0_D13, .offset = 11},
+ {.res = P_PPI0_D14, .offset = 11},
+ {.res = P_PPI0_D15, .offset = 11},
+ {.res = P_SPORT1_TFS, .offset = 11},
+ {.res = P_SPORT1_TSCLK, .offset = 11},
+ {.res = P_SPORT1_DTPRI, .offset = 11},
+ {.res = P_PPI0_D10, .offset = 10},
+ {.res = P_PPI0_D11, .offset = 10},
+ {.res = P_PPI0_D12, .offset = 10},
+ {.res = P_SPORT1_RSCLK, .offset = 10},
+ {.res = P_SPORT1_RFS, .offset = 10},
+ {.res = P_SPORT1_DRPRI, .offset = 10},
+ {.res = P_PPI0_D8, .offset = 9},
+ {.res = P_PPI0_D9, .offset = 9},
+ {.res = P_SPORT1_DRSEC, .offset = 9},
+ {.res = P_SPORT1_DTSEC, .offset = 9},
+ {.res = P_TMR2, .offset = 8},
+ {.res = P_PPI0_FS3, .offset = 8},
+ {.res = P_TMR3, .offset = 7},
+ {.res = P_SPI0_SSEL4, .offset = 7},
+ {.res = P_TMR4, .offset = 6},
+ {.res = P_SPI0_SSEL5, .offset = 6},
+ {.res = P_TMR5, .offset = 5},
+ {.res = P_SPI0_SSEL6, .offset = 5},
+ {.res = P_UART1_RX, .offset = 4},
+ {.res = P_UART1_TX, .offset = 4},
+ {.res = P_TMR6, .offset = 4},
+ {.res = P_TMR7, .offset = 4},
+ {.res = P_UART0_RX, .offset = 3},
+ {.res = P_UART0_TX, .offset = 3},
+ {.res = P_DMAR0, .offset = 3},
+ {.res = P_DMAR1, .offset = 3},
+ {.res = P_SPORT0_DTSEC, .offset = 1},
+ {.res = P_SPORT0_DRSEC, .offset = 1},
+ {.res = P_CAN0_RX, .offset = 1},
+ {.res = P_CAN0_TX, .offset = 1},
+ {.res = P_SPI0_SSEL7, .offset = 1},
+ {.res = P_SPORT0_TFS, .offset = 0},
+ {.res = P_SPORT0_DTPRI, .offset = 0},
+ {.res = P_SPI0_SSEL2, .offset = 0},
+ {.res = P_SPI0_SSEL3, .offset = 0},
};
static void portmux_setup(unsigned short per, unsigned short function)
{
- u16 y, muxreg, offset;
+ u16 y, offset, muxreg;
- for (y = 0; y < PMUX_LUT_ENTRIES; y++) {
- if (port_mux_lut[y][PMUX_LUT_RES] == per) {
+ for (y = 0; y < ARRAY_SIZE(port_mux_lut); y++) {
+ if (port_mux_lut[y].res == per) {
/* SET PORTMUX REG */
- offset = port_mux_lut[y][PMUX_LUT_OFFSET];
+ offset = port_mux_lut[y].offset;
muxreg = bfin_read_PORT_MUX();
if (offset != 1) {
@@ -238,18 +333,42 @@ static void portmux_setup(unsigned short per, unsigned short function)
}
}
}
+#elif defined(BF548_FAMILY)
+inline void portmux_setup(unsigned short portno, unsigned short function)
+{
+ u32 pmux;
+
+ pmux = gpio_array[gpio_bank(portno)]->port_mux;
+
+ pmux &= ~(0x3 << (2 * gpio_sub_n(portno)));
+ pmux |= (function & 0x3) << (2 * gpio_sub_n(portno));
+ gpio_array[gpio_bank(portno)]->port_mux = pmux;
+}
+
+inline u16 get_portmux(unsigned short portno)
+{
+ u32 pmux;
+
+ pmux = gpio_array[gpio_bank(portno)]->port_mux;
+
+ return (pmux >> (2 * gpio_sub_n(portno)) & 0x3);
+}
#else
# define portmux_setup(...) do { } while (0)
#endif
+#ifndef BF548_FAMILY
static void default_gpio(unsigned short gpio)
{
unsigned short bank, bitmask;
+ unsigned long flags;
bank = gpio_bank(gpio);
bitmask = gpio_bit(gpio);
+ local_irq_save(flags);
+
gpio_bankb[bank]->maska_clear = bitmask;
gpio_bankb[bank]->maskb_clear = bitmask;
SSYNC();
@@ -258,24 +377,32 @@ static void default_gpio(unsigned short gpio)
gpio_bankb[bank]->polar &= ~bitmask;
gpio_bankb[bank]->both &= ~bitmask;
gpio_bankb[bank]->edge &= ~bitmask;
+ AWA_DUMMY_READ(edge);
+ local_irq_restore(flags);
+
}
+#else
+# define default_gpio(...) do { } while (0)
+#endif
static int __init bfin_gpio_init(void)
{
-
- str_ident = kzalloc(RESOURCE_LABEL_SIZE * 256, GFP_KERNEL);
- if (!str_ident)
+ str_ident = kcalloc(MAX_RESOURCES,
+ sizeof(struct str_ident), GFP_KERNEL);
+ if (str_ident == NULL)
return -ENOMEM;
+ memset(str_ident, 0, MAX_RESOURCES * sizeof(struct str_ident));
+
printk(KERN_INFO "Blackfin GPIO Controller\n");
return 0;
}
-
arch_initcall(bfin_gpio_init);
+#ifndef BF548_FAMILY
/***********************************************************
*
* FUNCTIONS: Blackfin General Purpose Ports Access Functions
@@ -305,6 +432,7 @@ void set_gpio_ ## name(unsigned short gpio, unsigned short arg) \
gpio_bankb[gpio_bank(gpio)]->name |= gpio_bit(gpio); \
else \
gpio_bankb[gpio_bank(gpio)]->name &= ~gpio_bit(gpio); \
+ AWA_DUMMY_READ(name); \
local_irq_restore(flags); \
} \
EXPORT_SYMBOL(set_gpio_ ## name);
@@ -316,6 +444,22 @@ SET_GPIO(edge)
SET_GPIO(both)
+#if ANOMALY_05000311 || ANOMALY_05000323
+#define SET_GPIO_SC(name) \
+void set_gpio_ ## name(unsigned short gpio, unsigned short arg) \
+{ \
+ unsigned long flags; \
+ BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))); \
+ local_irq_save(flags); \
+ if (arg) \
+ gpio_bankb[gpio_bank(gpio)]->name ## _set = gpio_bit(gpio); \
+ else \
+ gpio_bankb[gpio_bank(gpio)]->name ## _clear = gpio_bit(gpio); \
+ AWA_DUMMY_READ(name); \
+ local_irq_restore(flags); \
+} \
+EXPORT_SYMBOL(set_gpio_ ## name);
+#else
#define SET_GPIO_SC(name) \
void set_gpio_ ## name(unsigned short gpio, unsigned short arg) \
{ \
@@ -326,37 +470,20 @@ void set_gpio_ ## name(unsigned short gpio, unsigned short arg) \
gpio_bankb[gpio_bank(gpio)]->name ## _clear = gpio_bit(gpio); \
} \
EXPORT_SYMBOL(set_gpio_ ## name);
+#endif
SET_GPIO_SC(maska)
SET_GPIO_SC(maskb)
-
-#if defined(ANOMALY_05000311)
-void set_gpio_data(unsigned short gpio, unsigned short arg)
-{
- unsigned long flags;
- BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
- local_irq_save(flags);
- if (arg)
- gpio_bankb[gpio_bank(gpio)]->data_set = gpio_bit(gpio);
- else
- gpio_bankb[gpio_bank(gpio)]->data_clear = gpio_bit(gpio);
- bfin_read_CHIPID();
- local_irq_restore(flags);
-}
-EXPORT_SYMBOL(set_gpio_data);
-#else
SET_GPIO_SC(data)
-#endif
-
-#if defined(ANOMALY_05000311)
+#if ANOMALY_05000311 || ANOMALY_05000323
void set_gpio_toggle(unsigned short gpio)
{
unsigned long flags;
BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
local_irq_save(flags);
gpio_bankb[gpio_bank(gpio)]->toggle = gpio_bit(gpio);
- bfin_read_CHIPID();
+ AWA_DUMMY_READ(toggle);
local_irq_restore(flags);
}
#else
@@ -371,13 +498,27 @@ EXPORT_SYMBOL(set_gpio_toggle);
/*Set current PORT date (16-bit word)*/
+#if ANOMALY_05000311 || ANOMALY_05000323
#define SET_GPIO_P(name) \
void set_gpiop_ ## name(unsigned short gpio, unsigned short arg) \
{ \
+ unsigned long flags; \
+ local_irq_save(flags); \
gpio_bankb[gpio_bank(gpio)]->name = arg; \
+ AWA_DUMMY_READ(name); \
+ local_irq_restore(flags); \
} \
EXPORT_SYMBOL(set_gpiop_ ## name);
+#else
+#define SET_GPIO_P(name) \
+void set_gpiop_ ## name(unsigned short gpio, unsigned short arg) \
+{ \
+ gpio_bankb[gpio_bank(gpio)]->name = arg; \
+} \
+EXPORT_SYMBOL(set_gpiop_ ## name);
+#endif
+SET_GPIO_P(data)
SET_GPIO_P(dir)
SET_GPIO_P(inen)
SET_GPIO_P(polar)
@@ -387,31 +528,30 @@ SET_GPIO_P(maska)
SET_GPIO_P(maskb)
-#if defined(ANOMALY_05000311)
-void set_gpiop_data(unsigned short gpio, unsigned short arg)
-{
- unsigned long flags;
- local_irq_save(flags);
- gpio_bankb[gpio_bank(gpio)]->data = arg;
- bfin_read_CHIPID();
- local_irq_restore(flags);
-}
-EXPORT_SYMBOL(set_gpiop_data);
-#else
-SET_GPIO_P(data)
-#endif
-
-
-
/* Get a specific bit */
-
+#if ANOMALY_05000311 || ANOMALY_05000323
+#define GET_GPIO(name) \
+unsigned short get_gpio_ ## name(unsigned short gpio) \
+{ \
+ unsigned long flags; \
+ unsigned short ret; \
+ local_irq_save(flags); \
+ ret = 0x01 & (gpio_bankb[gpio_bank(gpio)]->name >> gpio_sub_n(gpio)); \
+ AWA_DUMMY_READ(name); \
+ local_irq_restore(flags); \
+ return ret; \
+} \
+EXPORT_SYMBOL(get_gpio_ ## name);
+#else
#define GET_GPIO(name) \
unsigned short get_gpio_ ## name(unsigned short gpio) \
{ \
return (0x01 & (gpio_bankb[gpio_bank(gpio)]->name >> gpio_sub_n(gpio))); \
} \
EXPORT_SYMBOL(get_gpio_ ## name);
+#endif
+GET_GPIO(data)
GET_GPIO(dir)
GET_GPIO(inen)
GET_GPIO(polar)
@@ -420,33 +560,31 @@ GET_GPIO(both)
GET_GPIO(maska)
GET_GPIO(maskb)
-
-#if defined(ANOMALY_05000311)
-unsigned short get_gpio_data(unsigned short gpio)
-{
- unsigned long flags;
- unsigned short ret;
- BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
- local_irq_save(flags);
- ret = 0x01 & (gpio_bankb[gpio_bank(gpio)]->data >> gpio_sub_n(gpio));
- bfin_read_CHIPID();
- local_irq_restore(flags);
- return ret;
-}
-EXPORT_SYMBOL(get_gpio_data);
-#else
-GET_GPIO(data)
-#endif
-
/*Get current PORT date (16-bit word)*/
+#if ANOMALY_05000311 || ANOMALY_05000323
+#define GET_GPIO_P(name) \
+unsigned short get_gpiop_ ## name(unsigned short gpio) \
+{ \
+ unsigned long flags; \
+ unsigned short ret; \
+ local_irq_save(flags); \
+ ret = (gpio_bankb[gpio_bank(gpio)]->name); \
+ AWA_DUMMY_READ(name); \
+ local_irq_restore(flags); \
+ return ret; \
+} \
+EXPORT_SYMBOL(get_gpiop_ ## name);
+#else
#define GET_GPIO_P(name) \
unsigned short get_gpiop_ ## name(unsigned short gpio) \
{ \
return (gpio_bankb[gpio_bank(gpio)]->name);\
} \
EXPORT_SYMBOL(get_gpiop_ ## name);
+#endif
+GET_GPIO_P(data)
GET_GPIO_P(dir)
GET_GPIO_P(inen)
GET_GPIO_P(polar)
@@ -455,21 +593,6 @@ GET_GPIO_P(both)
GET_GPIO_P(maska)
GET_GPIO_P(maskb)
-#if defined(ANOMALY_05000311)
-unsigned short get_gpiop_data(unsigned short gpio)
-{
- unsigned long flags;
- unsigned short ret;
- local_irq_save(flags);
- ret = gpio_bankb[gpio_bank(gpio)]->data;
- bfin_read_CHIPID();
- local_irq_restore(flags);
- return ret;
-}
-EXPORT_SYMBOL(get_gpiop_data);
-#else
-GET_GPIO_P(data)
-#endif
#ifdef CONFIG_PM
/***********************************************************
@@ -593,6 +716,8 @@ u32 gpio_pm_setup(void)
}
}
+ AWA_DUMMY_READ(maskb_set);
+
if (sic_iwr)
return sic_iwr;
else
@@ -624,12 +749,99 @@ void gpio_pm_restore(void)
gpio_bankb[bank]->maskb = gpio_bank_saved[bank].maskb;
}
+ AWA_DUMMY_READ(maskb);
}
#endif
+#endif /* BF548_FAMILY */
+/***********************************************************
+*
+* FUNCTIONS: Blackfin Peripheral Resource Allocation
+* and PortMux Setup
+*
+* INPUTS/OUTPUTS:
+* per Peripheral Identifier
+* label String
+*
+* DESCRIPTION: Blackfin Peripheral Resource Allocation and Setup API
+*
+* CAUTION:
+*************************************************************
+* MODIFICATION HISTORY :
+**************************************************************/
+
+#ifdef BF548_FAMILY
+int peripheral_request(unsigned short per, const char *label)
+{
+ unsigned long flags;
+ unsigned short ident = P_IDENT(per);
+
+ /*
+ * Don't cares are pins with only one dedicated function
+ */
+
+ if (per & P_DONTCARE)
+ return 0;
+
+ if (!(per & P_DEFINED))
+ return -ENODEV;
+
+ if (check_gpio(ident) < 0)
+ return -EINVAL;
+
+ local_irq_save(flags);
+
+ if (unlikely(reserved_gpio_map[gpio_bank(ident)] & gpio_bit(ident))) {
+ printk(KERN_ERR
+ "%s: Peripheral %d is already reserved as GPIO by %s !\n",
+ __FUNCTION__, ident, get_label(ident));
+ dump_stack();
+ local_irq_restore(flags);
+ return -EBUSY;
+ }
+
+ if (unlikely(reserved_peri_map[gpio_bank(ident)] & gpio_bit(ident))) {
+
+ u16 funct = get_portmux(ident);
+
+ /*
+ * Pin functions like AMC address strobes my
+ * be requested and used by several drivers
+ */
+
+ if (!((per & P_MAYSHARE) && (funct == P_FUNCT2MUX(per)))) {
+
+ /*
+ * Allow that the identical pin function can
+ * be requested from the same driver twice
+ */
+
+ if (cmp_label(ident, label) == 0)
+ goto anyway;
+ printk(KERN_ERR
+ "%s: Peripheral %d function %d is already reserved by %s !\n",
+ __FUNCTION__, ident, P_FUNCT2MUX(per), get_label(ident));
+ dump_stack();
+ local_irq_restore(flags);
+ return -EBUSY;
+ }
+ }
+anyway:
+ reserved_peri_map[gpio_bank(ident)] |= gpio_bit(ident);
+
+ portmux_setup(ident, P_FUNCT2MUX(per));
+ port_setup(ident, PERIPHERAL_USAGE);
+
+ local_irq_restore(flags);
+ set_label(ident, label);
+
+ return 0;
+}
+EXPORT_SYMBOL(peripheral_request);
+#else
int peripheral_request(unsigned short per, const char *label)
{
@@ -680,7 +892,7 @@ int peripheral_request(unsigned short per, const char *label)
printk(KERN_ERR
"%s: Peripheral %d function %d is already"
- "reserved by %s !\n",
+ " reserved by %s !\n",
__FUNCTION__, ident, P_FUNCT2MUX(per),
get_label(ident));
dump_stack();
@@ -691,8 +903,6 @@ int peripheral_request(unsigned short per, const char *label)
}
anyway:
-
-
portmux_setup(per, P_FUNCT2MUX(per));
port_setup(ident, PERIPHERAL_USAGE);
@@ -704,6 +914,7 @@ anyway:
return 0;
}
EXPORT_SYMBOL(peripheral_request);
+#endif
int peripheral_request_list(unsigned short per[], const char *label)
{
@@ -711,9 +922,15 @@ int peripheral_request_list(unsigned short per[], const char *label)
int ret;
for (cnt = 0; per[cnt] != 0; cnt++) {
+
ret = peripheral_request(per[cnt], label);
- if (ret < 0)
- return ret;
+
+ if (ret < 0) {
+ for ( ; cnt > 0; cnt--) {
+ peripheral_free(per[cnt - 1]);
+ }
+ return ret;
+ }
}
return 0;
@@ -748,6 +965,8 @@ void peripheral_free(unsigned short per)
reserved_peri_map[gpio_bank(ident)] &= ~gpio_bit(ident);
+ set_label(ident, "free");
+
local_irq_restore(flags);
}
EXPORT_SYMBOL(peripheral_free);
@@ -768,8 +987,8 @@ EXPORT_SYMBOL(peripheral_free_list);
* FUNCTIONS: Blackfin GPIO Driver
*
* INPUTS/OUTPUTS:
-* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
-*
+* gpio PIO Number between 0 and MAX_BLACKFIN_GPIOS
+* label String
*
* DESCRIPTION: Blackfin GPIO Driver API
*
@@ -787,17 +1006,39 @@ int gpio_request(unsigned short gpio, const char *label)
local_irq_save(flags);
+ /*
+ * Allow that the identical GPIO can
+ * be requested from the same driver twice
+ * Do nothing and return -
+ */
+
+ if (cmp_label(gpio, label) == 0) {
+ local_irq_restore(flags);
+ return 0;
+ }
+
if (unlikely(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
- printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved!\n", gpio);
+ printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n",
+ gpio, get_label(gpio));
dump_stack();
local_irq_restore(flags);
return -EBUSY;
}
+ if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
+ printk(KERN_ERR
+ "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
+ gpio, get_label(gpio));
+ dump_stack();
+ local_irq_restore(flags);
+ return -EBUSY;
+ }
+
reserved_gpio_map[gpio_bank(gpio)] |= gpio_bit(gpio);
local_irq_restore(flags);
port_setup(gpio, GPIO_USAGE);
+ set_label(gpio, label);
return 0;
}
@@ -823,10 +1064,57 @@ void gpio_free(unsigned short gpio)
reserved_gpio_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
+ set_label(gpio, "free");
+
local_irq_restore(flags);
}
EXPORT_SYMBOL(gpio_free);
+#ifdef BF548_FAMILY
+void gpio_direction_input(unsigned short gpio)
+{
+ unsigned long flags;
+
+ BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
+
+ local_irq_save(flags);
+ gpio_array[gpio_bank(gpio)]->port_dir_clear = gpio_bit(gpio);
+ gpio_array[gpio_bank(gpio)]->port_inen |= gpio_bit(gpio);
+ local_irq_restore(flags);
+}
+EXPORT_SYMBOL(gpio_direction_input);
+
+void gpio_direction_output(unsigned short gpio)
+{
+ unsigned long flags;
+
+ BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)));
+
+ local_irq_save(flags);
+ gpio_array[gpio_bank(gpio)]->port_inen &= ~gpio_bit(gpio);
+ gpio_array[gpio_bank(gpio)]->port_dir_set = gpio_bit(gpio);
+ local_irq_restore(flags);
+}
+EXPORT_SYMBOL(gpio_direction_output);
+
+void gpio_set_value(unsigned short gpio, unsigned short arg)
+{
+ if (arg)
+ gpio_array[gpio_bank(gpio)]->port_set = gpio_bit(gpio);
+ else
+ gpio_array[gpio_bank(gpio)]->port_clear = gpio_bit(gpio);
+
+}
+EXPORT_SYMBOL(gpio_set_value);
+
+unsigned short gpio_get_value(unsigned short gpio)
+{
+ return (1 & (gpio_array[gpio_bank(gpio)]->port_data >> gpio_sub_n(gpio)));
+}
+EXPORT_SYMBOL(gpio_get_value);
+
+#else
+
void gpio_direction_input(unsigned short gpio)
{
unsigned long flags;
@@ -836,6 +1124,7 @@ void gpio_direction_input(unsigned short gpio)
local_irq_save(flags);
gpio_bankb[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio);
gpio_bankb[gpio_bank(gpio)]->inen |= gpio_bit(gpio);
+ AWA_DUMMY_READ(inen);
local_irq_restore(flags);
}
EXPORT_SYMBOL(gpio_direction_input);
@@ -849,6 +1138,28 @@ void gpio_direction_output(unsigned short gpio)
local_irq_save(flags);
gpio_bankb[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio);
gpio_bankb[gpio_bank(gpio)]->dir |= gpio_bit(gpio);
+ AWA_DUMMY_READ(dir);
local_irq_restore(flags);
}
EXPORT_SYMBOL(gpio_direction_output);
+
+/* If we are booting from SPI and our board lacks a strong enough pull up,
+ * the core can reset and execute the bootrom faster than the resistor can
+ * pull the signal logically high. To work around this (common) error in
+ * board design, we explicitly set the pin back to GPIO mode, force /CS
+ * high, and wait for the electrons to do their thing.
+ *
+ * This function only makes sense to be called from reset code, but it
+ * lives here as we need to force all the GPIO states w/out going through
+ * BUG() checks and such.
+ */
+void bfin_gpio_reset_spi0_ssel1(void)
+{
+ u16 gpio = P_IDENT(P_SPI0_SSEL1);
+
+ port_setup(gpio, GPIO_USAGE);
+ gpio_bankb[gpio_bank(gpio)]->data_set = gpio_bit(gpio);
+ udelay(1);
+}
+
+#endif /*BF548_FAMILY */
diff --git a/arch/blackfin/kernel/bfin_ksyms.c b/arch/blackfin/kernel/bfin_ksyms.c
index 70455949cfd..2198afe40f3 100644
--- a/arch/blackfin/kernel/bfin_ksyms.c
+++ b/arch/blackfin/kernel/bfin_ksyms.c
@@ -60,6 +60,7 @@ EXPORT_SYMBOL(csum_partial_copy);
* their interface isn't gonna change any time soon now, so
* it's OK to leave it out of version control.
*/
+EXPORT_SYMBOL(strcpy);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memcmp);
diff --git a/arch/blackfin/kernel/cacheinit.c b/arch/blackfin/kernel/cacheinit.c
index 4d41a40e813..62cbba7364b 100644
--- a/arch/blackfin/kernel/cacheinit.c
+++ b/arch/blackfin/kernel/cacheinit.c
@@ -21,9 +21,10 @@
#include <asm/cacheflush.h>
#include <asm/blackfin.h>
+#include <asm/cplb.h>
#include <asm/cplbinit.h>
-#if defined(CONFIG_BLKFIN_CACHE)
+#if defined(CONFIG_BFIN_ICACHE)
void bfin_icache_init(void)
{
unsigned long *table = icplb_table;
@@ -44,7 +45,7 @@ void bfin_icache_init(void)
}
#endif
-#if defined(CONFIG_BLKFIN_DCACHE)
+#if defined(CONFIG_BFIN_DCACHE)
void bfin_dcache_init(void)
{
unsigned long *table = dcplb_table;
diff --git a/arch/blackfin/kernel/cplbinit.c b/arch/blackfin/kernel/cplbinit.c
index bbdb403fcb5..f2db6a5e2b5 100644
--- a/arch/blackfin/kernel/cplbinit.c
+++ b/arch/blackfin/kernel/cplbinit.c
@@ -23,6 +23,7 @@
#include <linux/module.h>
#include <asm/blackfin.h>
+#include <asm/cplb.h>
#include <asm/cplbinit.h>
u_long icplb_table[MAX_CPLBS+1];
@@ -56,7 +57,7 @@ struct s_cplb {
struct cplb_tab switch_d;
};
-#if defined(CONFIG_BLKFIN_DCACHE) || defined(CONFIG_BLKFIN_CACHE)
+#if defined(CONFIG_BFIN_DCACHE) || defined(CONFIG_BFIN_ICACHE)
static struct cplb_desc cplb_data[] = {
{
.start = 0,
@@ -230,8 +231,8 @@ static void __fill_code_cplbtab(struct cplb_tab *t, int i, u32 a_start, u32 a_en
cplb_data[i].psize,
cplb_data[i].i_conf);
} else {
-#if (defined(CONFIG_BLKFIN_CACHE) && defined(ANOMALY_05000263))
- if (i == SDRAM_KERN) {
+#if defined(CONFIG_BFIN_ICACHE)
+ if (ANOMALY_05000263 && i == SDRAM_KERN) {
fill_cplbtab(t,
cplb_data[i].start,
cplb_data[i].end,
diff --git a/arch/blackfin/kernel/early_printk.c b/arch/blackfin/kernel/early_printk.c
new file mode 100644
index 00000000000..6ec518a8111
--- /dev/null
+++ b/arch/blackfin/kernel/early_printk.c
@@ -0,0 +1,214 @@
+/*
+ * File: arch/blackfin/kernel/early_printk.c
+ * Based on: arch/x86_64/kernel/early_printk.c
+ * Author: Robin Getz <rgetz@blackfin.uclinux.org
+ *
+ * Created: 14Aug2007
+ * Description: allow a console to be used for early printk
+ *
+ * Modified:
+ * Copyright 2004-2007 Analog Devices Inc.
+ *
+ * Bugs: Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/serial_core.h>
+#include <linux/console.h>
+#include <linux/string.h>
+#include <asm/blackfin.h>
+#include <asm/irq_handler.h>
+#include <asm/early_printk.h>
+
+#ifdef CONFIG_SERIAL_BFIN
+extern struct console *bfin_earlyserial_init(unsigned int port,
+ unsigned int cflag);
+#endif
+
+static struct console *early_console;
+
+/* Default console */
+#define DEFAULT_PORT 0
+#define DEFAULT_CFLAG CS8|B57600
+
+/* Default console for early crashes */
+#define DEFAULT_EARLY_PORT "serial,uart0,57600"
+
+#ifdef CONFIG_SERIAL_CORE
+/* What should get here is "0,57600" */
+static struct console * __init earlyserial_init(char *buf)
+{
+ int baud, bit;
+ char parity;
+ unsigned int serial_port = DEFAULT_PORT;
+ unsigned int cflag = DEFAULT_CFLAG;
+
+ serial_port = simple_strtoul(buf, &buf, 10);
+ buf++;
+
+ cflag = 0;
+ baud = simple_strtoul(buf, &buf, 10);
+ switch (baud) {
+ case 1200:
+ cflag |= B1200;
+ break;
+ case 2400:
+ cflag |= B2400;
+ break;
+ case 4800:
+ cflag |= B4800;
+ break;
+ case 9600:
+ cflag |= B9600;
+ break;
+ case 19200:
+ cflag |= B19200;
+ break;
+ case 38400:
+ cflag |= B38400;
+ break;
+ case 115200:
+ cflag |= B115200;
+ break;
+ default:
+ cflag |= B57600;
+ }
+
+ parity = buf[0];
+ buf++;
+ switch (parity) {
+ case 'e':
+ cflag |= PARENB;
+ break;
+ case 'o':
+ cflag |= PARODD;
+ break;
+ }
+
+ bit = simple_strtoul(buf, &buf, 10);
+ switch (bit) {
+ case 5:
+ cflag |= CS5;
+ break;
+ case 6:
+ cflag |= CS5;
+ break;
+ case 7:
+ cflag |= CS5;
+ break;
+ default:
+ cflag |= CS8;
+ }
+
+#ifdef CONFIG_SERIAL_BFIN
+ return bfin_earlyserial_init(serial_port, cflag);
+#else
+ return NULL;
+#endif
+
+}
+#endif
+
+int __init setup_early_printk(char *buf)
+{
+
+ /* Crashing in here would be really bad, so check both the var
+ and the pointer before we start using it
+ */
+ if (!buf)
+ return 0;
+
+ if (!*buf)
+ return 0;
+
+ if (early_console != NULL)
+ return 0;
+
+#ifdef CONFIG_SERIAL_BFIN
+ /* Check for Blackfin Serial */
+ if (!strncmp(buf, "serial,uart", 11)) {
+ buf += 11;
+ early_console = earlyserial_init(buf);
+ }
+#endif
+#ifdef CONFIG_FB
+ /* TODO: add framebuffer console support */
+#endif
+
+ if (likely(early_console)) {
+ early_console->flags |= CON_BOOT;
+
+ register_console(early_console);
+ printk(KERN_INFO "early printk enabled on %s%d\n",
+ early_console->name,
+ early_console->index);
+ }
+
+ return 0;
+}
+
+/*
+ * Set up a temporary Event Vector Table, so if something bad happens before
+ * the kernel is fully started, it doesn't vector off into somewhere we don't
+ * know
+ */
+
+asmlinkage void __init init_early_exception_vectors(void)
+{
+ SSYNC();
+
+ /* cannot program in software:
+ * evt0 - emulation (jtag)
+ * evt1 - reset
+ */
+ bfin_write_EVT2(early_trap);
+ bfin_write_EVT3(early_trap);
+ bfin_write_EVT5(early_trap);
+ bfin_write_EVT6(early_trap);
+ bfin_write_EVT7(early_trap);
+ bfin_write_EVT8(early_trap);
+ bfin_write_EVT9(early_trap);
+ bfin_write_EVT10(early_trap);
+ bfin_write_EVT11(early_trap);
+ bfin_write_EVT12(early_trap);
+ bfin_write_EVT13(early_trap);
+ bfin_write_EVT14(early_trap);
+ bfin_write_EVT15(early_trap);
+ CSYNC();
+
+ /* Set all the return from interupt, exception, NMI to a known place
+ * so if we do a RETI, RETX or RETN by mistake - we go somewhere known
+ * Note - don't change RETS - we are in a subroutine, or
+ * RETE - since it might screw up if emulator is attached
+ */
+ asm("\tRETI = %0; RETX = %0; RETN = %0;\n"
+ : : "p"(early_trap));
+
+}
+
+asmlinkage void __init early_trap_c(struct pt_regs *fp, void *retaddr)
+{
+ /* This can happen before the uart is initialized, so initialize
+ * the UART now
+ */
+ if (likely(early_console == NULL))
+ setup_early_printk(DEFAULT_EARLY_PORT);
+
+ dump_bfin_regs(fp, retaddr);
+ dump_bfin_trace_buffer();
+
+ panic("Died early");
+}
+
+early_param("earlyprintk", setup_early_printk);
diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c
index 1fc001c7abd..73647c15877 100644
--- a/arch/blackfin/kernel/irqchip.c
+++ b/arch/blackfin/kernel/irqchip.c
@@ -34,6 +34,7 @@
#include <linux/kallsyms.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
+#include <asm/trace.h>
static unsigned long irq_err_count;
static spinlock_t irq_controller_lock;
@@ -97,9 +98,8 @@ int show_interrupts(struct seq_file *p, void *v)
*/
#ifdef CONFIG_DO_IRQ_L1
-asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)__attribute__((l1_text));
+__attribute__((l1_text))
#endif
-
asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
{
struct pt_regs *old_regs;
@@ -144,4 +144,12 @@ void __init init_IRQ(void)
}
init_arch_irq();
+
+#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
+ /* Now that evt_ivhw is set up, turn this on */
+ trace_buff_offset = 0;
+ bfin_write_TBUFCTL(BFIN_TRACE_ON);
+ printk(KERN_INFO "Hardware Trace expanded to %ik\n",
+ 1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN);
+#endif
}
diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c
index 6a7aefe4834..9124467651c 100644
--- a/arch/blackfin/kernel/process.c
+++ b/arch/blackfin/kernel/process.c
@@ -134,31 +134,6 @@ void cpu_idle(void)
}
}
-void machine_restart(char *__unused)
-{
-#if defined(CONFIG_BLKFIN_CACHE)
- bfin_write_IMEM_CONTROL(0x01);
- SSYNC();
-#endif
- bfin_reset();
- /* Dont do anything till the reset occurs */
- while (1) {
- SSYNC();
- }
-}
-
-void machine_halt(void)
-{
- for (;;)
- asm volatile ("idle");
-}
-
-void machine_power_off(void)
-{
- for (;;)
- asm volatile ("idle");
-}
-
void show_regs(struct pt_regs *regs)
{
printk(KERN_NOTICE "\n");
@@ -420,7 +395,8 @@ void finish_atomic_sections (struct pt_regs *regs)
#if defined(CONFIG_ACCESS_CHECK)
int _access_ok(unsigned long addr, unsigned long size)
{
-
+ if (size == 0)
+ return 1;
if (addr > (addr + size))
return 0;
if (segment_eq(get_fs(), KERNEL_DS))
diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c
index ed800c7456d..64ce5fea860 100644
--- a/arch/blackfin/kernel/ptrace.c
+++ b/arch/blackfin/kernel/ptrace.c
@@ -44,6 +44,7 @@
#include <asm/processor.h>
#include <asm/asm-offsets.h>
#include <asm/dma.h>
+#include <asm/fixed_code.h>
#define MAX_SHARED_LIBS 3
#define TEXT_OFFSET 0
@@ -169,6 +170,9 @@ static inline int is_user_addr_valid(struct task_struct *child,
&& start + len <= (unsigned long)sraml->addr + sraml->length)
return 0;
+ if (start >= FIXED_CODE_START && start + len <= FIXED_CODE_END)
+ return 0;
+
return -EIO;
}
@@ -215,9 +219,13 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
copied = sizeof(tmp);
} else
#endif
- copied =
- access_process_vm(child, addr + add, &tmp,
- sizeof(tmp), 0);
+ if (addr + add >= FIXED_CODE_START
+ && addr + add + sizeof(tmp) <= FIXED_CODE_END) {
+ memcpy(&tmp, (const void *)(addr + add), sizeof(tmp));
+ copied = sizeof(tmp);
+ } else
+ copied = access_process_vm(child, addr + add, &tmp,
+ sizeof(tmp), 0);
pr_debug("ptrace: copied size %d [0x%08lx]\n", copied, tmp);
if (copied != sizeof(tmp))
break;
@@ -281,9 +289,13 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
copied = sizeof(data);
} else
#endif
- copied =
- access_process_vm(child, addr + add, &data,
- sizeof(data), 1);
+ if (addr + add >= FIXED_CODE_START
+ && addr + add + sizeof(data) <= FIXED_CODE_END) {
+ memcpy((void *)(addr + add), &data, sizeof(data));
+ copied = sizeof(data);
+ } else
+ copied = access_process_vm(child, addr + add, &data,
+ sizeof(data), 1);
pr_debug("ptrace: copied size %d\n", copied);
if (copied != sizeof(data))
break;
diff --git a/arch/blackfin/kernel/reboot.c b/arch/blackfin/kernel/reboot.c
new file mode 100644
index 00000000000..356078ec462
--- /dev/null
+++ b/arch/blackfin/kernel/reboot.c
@@ -0,0 +1,78 @@
+/*
+ * arch/blackfin/kernel/reboot.c - handle shutdown/reboot
+ *
+ * Copyright 2004-2007 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/interrupt.h>
+#include <asm/bfin-global.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+
+#if defined(BF537_FAMILY) || defined(BF533_FAMILY)
+#define SYSCR_VAL 0x0
+#elif defined(BF561_FAMILY)
+#define SYSCR_VAL 0x20
+#elif defined(BF548_FAMILY)
+#define SYSCR_VAL 0x10
+#endif
+
+/* A system soft reset makes external memory unusable
+ * so force this function into L1.
+ */
+__attribute__((l1_text))
+void bfin_reset(void)
+{
+ /* force BMODE and disable Core B (as needed) */
+ bfin_write_SYSCR(SYSCR_VAL);
+
+ /* we use asm ssync here because it's save and we save some L1 */
+ asm("ssync;");
+
+ while (1) {
+ /* initiate system soft reset with magic 0x7 */
+ bfin_write_SWRST(0x7);
+ asm("ssync;");
+ /* clear system soft reset */
+ bfin_write_SWRST(0);
+ asm("ssync;");
+ /* issue core reset */
+ asm("raise 1");
+ }
+}
+
+__attribute__((weak))
+void native_machine_restart(char *cmd)
+{
+}
+
+void machine_restart(char *cmd)
+{
+ native_machine_restart(cmd);
+ local_irq_disable();
+ bfin_reset();
+}
+
+__attribute__((weak))
+void native_machine_halt(void)
+{
+ idle_with_irq_disabled();
+}
+
+void machine_halt(void)
+{
+ native_machine_halt();
+}
+
+__attribute__((weak))
+void native_machine_power_off(void)
+{
+ idle_with_irq_disabled();
+}
+
+void machine_power_off(void)
+{
+ native_machine_power_off();
+}
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 88f221b89b3..8dcd76e87ed 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -39,10 +39,12 @@
#include <linux/cramfs_fs.h>
#include <linux/romfs_fs.h>
+#include <asm/cplb.h>
#include <asm/cacheflush.h>
#include <asm/blackfin.h>
#include <asm/cplbinit.h>
#include <asm/fixed_code.h>
+#include <asm/early_printk.h>
u16 _bfin_swrst;
@@ -66,21 +68,21 @@ char __initdata command_line[COMMAND_LINE_SIZE];
void __init bf53x_cache_init(void)
{
-#if defined(CONFIG_BLKFIN_DCACHE) || defined(CONFIG_BLKFIN_CACHE)
+#if defined(CONFIG_BFIN_DCACHE) || defined(CONFIG_BFIN_ICACHE)
generate_cpl_tables();
#endif
-#ifdef CONFIG_BLKFIN_CACHE
+#ifdef CONFIG_BFIN_ICACHE
bfin_icache_init();
printk(KERN_INFO "Instruction Cache Enabled\n");
#endif
-#ifdef CONFIG_BLKFIN_DCACHE
+#ifdef CONFIG_BFIN_DCACHE
bfin_dcache_init();
printk(KERN_INFO "Data Cache Enabled"
-# if defined CONFIG_BLKFIN_WB
+# if defined CONFIG_BFIN_WB
" (write-back)"
-# elif defined CONFIG_BLKFIN_WT
+# elif defined CONFIG_BFIN_WT
" (write-through)"
# endif
"\n");
@@ -156,8 +158,10 @@ static __init void parse_cmdline_early(char *cmdline_p)
1;
}
}
+ } else if (!memcmp(to, "earlyprintk=", 12)) {
+ to += 12;
+ setup_early_printk(to);
}
-
}
c = *(to++);
if (!c)
@@ -176,22 +180,36 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
+
+#if defined(CONFIG_CMDLINE_BOOL)
+ strncpy(&command_line[0], CONFIG_CMDLINE, sizeof(command_line));
+ command_line[sizeof(command_line) - 1] = 0;
+#endif
+
+ /* Keep a copy of command line */
+ *cmdline_p = &command_line[0];
+ memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
+ boot_command_line[COMMAND_LINE_SIZE - 1] = '\0';
+
+ /* setup memory defaults from the user config */
+ physical_mem_end = 0;
+ _ramend = CONFIG_MEM_SIZE * 1024 * 1024;
+
+ parse_cmdline_early(&command_line[0]);
+
cclk = get_cclk();
sclk = get_sclk();
-#if !defined(CONFIG_BFIN_KERNEL_CLOCK) && defined(ANOMALY_05000273)
- if (cclk == sclk)
+#if !defined(CONFIG_BFIN_KERNEL_CLOCK)
+ if (ANOMALY_05000273 && cclk == sclk)
panic("ANOMALY 05000273, SCLK can not be same as CCLK");
#endif
-#if defined(ANOMALY_05000266)
- bfin_read_IMDMA_D0_IRQ_STATUS();
- bfin_read_IMDMA_D1_IRQ_STATUS();
-#endif
-
-#ifdef DEBUG_SERIAL_EARLY_INIT
- bfin_console_init(); /* early console registration */
- /* this give a chance to get printk() working before crash. */
+#ifdef BF561_FAMILY
+ if (ANOMALY_05000266) {
+ bfin_read_IMDMA_D0_IRQ_STATUS();
+ bfin_read_IMDMA_D1_IRQ_STATUS();
+ }
#endif
printk(KERN_INFO "Hardware Trace ");
@@ -212,22 +230,6 @@ void __init setup_arch(char **cmdline_p)
flash_probe();
#endif
-#if defined(CONFIG_CMDLINE_BOOL)
- strncpy(&command_line[0], CONFIG_CMDLINE, sizeof(command_line));
- command_line[sizeof(command_line) - 1] = 0;
-#endif
-
- /* Keep a copy of command line */
- *cmdline_p = &command_line[0];
- memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
- boot_command_line[COMMAND_LINE_SIZE - 1] = '\0';
-
- /* setup memory defaults from the user config */
- physical_mem_end = 0;
- _ramend = CONFIG_MEM_SIZE * 1024 * 1024;
-
- parse_cmdline_early(&command_line[0]);
-
if (physical_mem_end == 0)
physical_mem_end = _ramend;
@@ -260,7 +262,7 @@ void __init setup_arch(char **cmdline_p)
&& ((unsigned long *)mtd_phys)[1] == ROMSB_WORD1)
mtd_size =
PAGE_ALIGN(be32_to_cpu(((unsigned long *)mtd_phys)[2]));
-# if (defined(CONFIG_BLKFIN_CACHE) && defined(ANOMALY_05000263))
+# if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263)
/* Due to a Hardware Anomaly we need to limit the size of usable
* instruction memory to max 60MB, 56 if HUNT_FOR_ZERO is on
* 05000263 - Hardware loop corrupted when taking an ICPLB exception
@@ -289,7 +291,7 @@ void __init setup_arch(char **cmdline_p)
_ebss = memory_mtd_start; /* define _ebss for compatible */
#endif /* CONFIG_MTD_UCLINUX */
-#if (defined(CONFIG_BLKFIN_CACHE) && defined(ANOMALY_05000263))
+#if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263)
/* Due to a Hardware Anomaly we need to limit the size of usable
* instruction memory to max 60MB, 56 if HUNT_FOR_ZERO is on
* 05000263 - Hardware loop corrupted when taking an ICPLB exception
@@ -334,13 +336,11 @@ void __init setup_arch(char **cmdline_p)
CPU, bfin_revid());
printk(KERN_INFO "Blackfin Linux support by http://blackfin.uclinux.org/\n");
- printk(KERN_INFO "Processor Speed: %lu MHz core clock and %lu Mhz System Clock\n",
+ printk(KERN_INFO "Processor Speed: %lu MHz core clock and %lu MHz System Clock\n",
cclk / 1000000, sclk / 1000000);
-#if defined(ANOMALY_05000273)
- if ((cclk >> 1) <= sclk)
+ if (ANOMALY_05000273 && (cclk >> 1) <= sclk)
printk("\n\n\nANOMALY_05000273: CCLK must be >= 2*SCLK !!!\n\n\n");
-#endif
printk(KERN_INFO "Board Memory: %ldMB\n", physical_mem_end >> 20);
printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", _ramend >> 20);
@@ -535,9 +535,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
seq_printf(m, "I-CACHE:\tOFF\n");
if ((bfin_read_DMEM_CONTROL()) & (ENDCPLB | DMC_ENABLE))
seq_printf(m, "D-CACHE:\tON"
-#if defined CONFIG_BLKFIN_WB
+#if defined CONFIG_BFIN_WB
" (write-back)"
-#elif defined CONFIG_BLKFIN_WT
+#elif defined CONFIG_BFIN_WT
" (write-through)"
#endif
"\n");
@@ -566,15 +566,15 @@ static int show_cpuinfo(struct seq_file *m, void *v)
}
- seq_printf(m, "I-CACHE Size:\t%dKB\n", BLKFIN_ICACHESIZE / 1024);
+ seq_printf(m, "I-CACHE Size:\t%dKB\n", BFIN_ICACHESIZE / 1024);
seq_printf(m, "D-CACHE Size:\t%dKB\n", dcache_size);
seq_printf(m, "I-CACHE Setup:\t%d Sub-banks/%d Ways, %d Lines/Way\n",
- BLKFIN_ISUBBANKS, BLKFIN_IWAYS, BLKFIN_ILINES);
+ BFIN_ISUBBANKS, BFIN_IWAYS, BFIN_ILINES);
seq_printf(m,
"D-CACHE Setup:\t%d Super-banks/%d Sub-banks/%d Ways, %d Lines/Way\n",
- dsup_banks, BLKFIN_DSUBBANKS, BLKFIN_DWAYS,
- BLKFIN_DLINES);
-#ifdef CONFIG_BLKFIN_CACHE_LOCK
+ dsup_banks, BFIN_DSUBBANKS, BFIN_DWAYS,
+ BFIN_DLINES);
+#ifdef CONFIG_BFIN_ICACHE_LOCK
switch (read_iloc()) {
case WAY0_L:
seq_printf(m, "Way0 Locked-Down\n");
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 792a8416fe1..8823e9ade58 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -51,10 +51,9 @@ void __init trap_init(void)
CSYNC();
}
-asmlinkage void trap_c(struct pt_regs *fp);
-
int kstack_depth_to_print = 48;
+#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON
static int printk_address(unsigned long address)
{
struct vm_list_struct *vml;
@@ -131,10 +130,22 @@ static int printk_address(unsigned long address)
/* we were unable to find this address anywhere */
return printk("[<0x%p>]", (void *)address);
}
+#endif
+
+asmlinkage void double_fault_c(struct pt_regs *fp)
+{
+ printk(KERN_EMERG "\n" KERN_EMERG "Double Fault\n");
+ dump_bfin_regs(fp, (void *)fp->retx);
+ panic("Double Fault - unrecoverable event\n");
+
+}
asmlinkage void trap_c(struct pt_regs *fp)
{
- int j, sig = 0;
+#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON
+ int j;
+#endif
+ int sig = 0;
siginfo_t info;
unsigned long trapnr = fp->seqstat & SEQSTAT_EXCAUSE;
@@ -391,10 +402,6 @@ asmlinkage void trap_c(struct pt_regs *fp)
break;
}
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_addr = (void *)fp->pc;
- force_sig_info(sig, &info, current);
if (sig != 0 && sig != SIGTRAP) {
unsigned long stack;
dump_bfin_regs(fp, (void *)fp->retx);
@@ -403,6 +410,10 @@ asmlinkage void trap_c(struct pt_regs *fp)
if (current->mm == NULL)
panic("Kernel exception");
}
+ info.si_signo = sig;
+ info.si_errno = 0;
+ info.si_addr = (void *)fp->pc;
+ force_sig_info(sig, &info, current);
/* if the address that we are about to return to is not valid, set it
* to a valid address, if we have a current application or panic
@@ -429,24 +440,56 @@ asmlinkage void trap_c(struct pt_regs *fp)
/* Typical exception handling routines */
+#define EXPAND_LEN ((1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN) * 256 - 1)
+
void dump_bfin_trace_buffer(void)
{
- int tflags;
+#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON
+ int tflags, i = 0;
+#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
+ int j, index;
+#endif
+
trace_buffer_save(tflags);
+ printk(KERN_EMERG "Hardware Trace:\n");
+
if (likely(bfin_read_TBUFSTAT() & TBUFCNT)) {
- int i;
- printk(KERN_EMERG "Hardware Trace:\n");
- for (i = 0; bfin_read_TBUFSTAT() & TBUFCNT; i++) {
- printk(KERN_EMERG "%2i Target : ", i);
+ for (; bfin_read_TBUFSTAT() & TBUFCNT; i++) {
+ printk(KERN_EMERG "%4i Target : ", i);
printk_address((unsigned long)bfin_read_TBUF());
- printk("\n" KERN_EMERG " Source : ");
+ printk("\n" KERN_EMERG " Source : ");
printk_address((unsigned long)bfin_read_TBUF());
printk("\n");
}
}
+#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
+ if (trace_buff_offset)
+ index = trace_buff_offset/4 - 1;
+ else
+ index = EXPAND_LEN;
+
+ j = (1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN) * 128;
+ while (j) {
+ printk(KERN_EMERG "%4i Target : ", i);
+ printk_address(software_trace_buff[index]);
+ index -= 1;
+ if (index < 0 )
+ index = EXPAND_LEN;
+ printk("\n" KERN_EMERG " Source : ");
+ printk_address(software_trace_buff[index]);
+ index -= 1;
+ if (index < 0)
+ index = EXPAND_LEN;
+ printk("\n");
+ j--;
+ i++;
+ }
+#endif
+
trace_buffer_restore(tflags);
+#endif
}
EXPORT_SYMBOL(dump_bfin_trace_buffer);
@@ -510,7 +553,9 @@ void show_stack(struct task_struct *task, unsigned long *stack)
void dump_stack(void)
{
unsigned long stack;
+#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON
int tflags;
+#endif
trace_buffer_save(tflags);
dump_bfin_trace_buffer();
show_stack(current, &stack);
@@ -559,8 +604,7 @@ void dump_bfin_regs(struct pt_regs *fp, void *retaddr)
unsigned short x = 0;
for (; i < ((unsigned int)retaddr & 0xFFFFFFF0) + 32; i += 2) {
if (!(i & 0xF))
- printk(KERN_EMERG "\n" KERN_EMERG
- "0x%08x: ", i);
+ printk("\n" KERN_EMERG "0x%08x: ", i);
if (get_user(x, (unsigned short *)i))
break;
@@ -655,6 +699,42 @@ asmlinkage int sys_bfin_spinlock(int *spinlock)
return ret;
}
+int bfin_request_exception(unsigned int exception, void (*handler)(void))
+{
+ void (*curr_handler)(void);
+
+ if (exception > 0x3F)
+ return -EINVAL;
+
+ curr_handler = ex_table[exception];
+
+ if (curr_handler != ex_replaceable)
+ return -EBUSY;
+
+ ex_table[exception] = handler;
+
+ return 0;
+}
+EXPORT_SYMBOL(bfin_request_exception);
+
+int bfin_free_exception(unsigned int exception, void (*handler)(void))
+{
+ void (*curr_handler)(void);
+
+ if (exception > 0x3F)
+ return -EINVAL;
+
+ curr_handler = ex_table[exception];
+
+ if (curr_handler != handler)
+ return -EBUSY;
+
+ ex_table[exception] = ex_replaceable;
+
+ return 0;
+}
+EXPORT_SYMBOL(bfin_free_exception);
+
void panic_cplb_error(int cplb_panic, struct pt_regs *fp)
{
switch (cplb_panic) {
diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S
index fb53780247b..eec43674a46 100644
--- a/arch/blackfin/kernel/vmlinux.lds.S
+++ b/arch/blackfin/kernel/vmlinux.lds.S
@@ -49,7 +49,8 @@ SECTIONS
TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
- *(.text.lock)
+ KPROBES_TEXT
+ *(.text.*)
*(.fixup)
. = ALIGN(16);
@@ -61,7 +62,7 @@ SECTIONS
__etext = .;
}
- RODATA
+ RO_DATA(PAGE_SIZE)
.data :
{
@@ -72,50 +73,63 @@ SECTIONS
__sdata = .;
. = ALIGN(THREAD_SIZE);
*(.data.init_task)
- DATA_DATA
- CONSTRUCTORS
. = ALIGN(32);
*(.data.cacheline_aligned)
+ DATA_DATA
+ *(.data.*)
+ CONSTRUCTORS
+
. = ALIGN(THREAD_SIZE);
__edata = .;
}
___init_begin = .;
- .init :
+
+ .init.text :
{
. = ALIGN(PAGE_SIZE);
__sinittext = .;
*(.init.text)
__einittext = .;
+ }
+ .init.data :
+ {
+ . = ALIGN(16);
*(.init.data)
+ }
+ .init.setup :
+ {
. = ALIGN(16);
___setup_start = .;
*(.init.setup)
___setup_end = .;
- ___start___param = .;
- *(__param)
- ___stop___param = .;
+ }
+ .initcall.init :
+ {
___initcall_start = .;
INITCALLS
___initcall_end = .;
+ }
+ .con_initcall.init :
+ {
___con_initcall_start = .;
*(.con_initcall.init)
___con_initcall_end = .;
- ___security_initcall_start = .;
- *(.security_initcall.init)
- ___security_initcall_end = .;
+ }
+ SECURITY_INIT
+ .init.ramfs :
+ {
. = ALIGN(4);
___initramfs_start = .;
*(.init.ramfs)
___initramfs_end = .;
- . = ALIGN(4);
}
__l1_lma_start = .;
- .text_l1 L1_CODE_START : AT(LOADADDR(.init) + SIZEOF(.init))
+ .text_l1 L1_CODE_START : AT(LOADADDR(.init.ramfs) + SIZEOF(.init.ramfs))
{
. = ALIGN(4);
__stext_l1 = .;
@@ -164,13 +178,19 @@ SECTIONS
{
. = ALIGN(4);
___bss_start = .;
- *(.bss)
+ *(.bss .bss.*)
*(COMMON)
. = ALIGN(4);
___bss_stop = .;
__end = .;
}
+ STABS_DEBUG
+
+ DWARF_DEBUG
+
+ NOTES
+
/DISCARD/ :
{
*(.exit.text)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 15:34:18 +0000