From d3522648676d4c8869e5539bca081820e69e24a4 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 4 Feb 2009 16:49:45 +0800 Subject: Blackfin arch: scrub comments/whitespace/cvs keywords Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/kgdb.h | 53 ++++++++++++---------------------------- 1 file changed, 15 insertions(+), 38 deletions(-) (limited to 'arch/blackfin/include') diff --git a/arch/blackfin/include/asm/kgdb.h b/arch/blackfin/include/asm/kgdb.h index 26ebac6646d..c8b256d2ea3 100644 --- a/arch/blackfin/include/asm/kgdb.h +++ b/arch/blackfin/include/asm/kgdb.h @@ -1,32 +1,8 @@ -/* - * File: include/asm-blackfin/kgdb.h - * Based on: - * Author: Sonic Zhang - * - * Created: - * Description: - * - * Rev: $Id: kgdb_bfin_linux-2.6.x.patch 4934 2007-02-13 09:32:11Z sonicz $ - * - * Modified: - * Copyright 2005-2006 Analog Devices Inc. - * - * Bugs: Enter bugs at http://blackfin.uclinux.org/ +/* Blackfin KGDB header * - * 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. + * Copyright 2005-2009 Analog Devices Inc. * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see the file COPYING, or write - * to the Free Software Foundation, Inc., - * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * Licensed under the GPL-2 or later. */ #ifndef __ASM_BLACKFIN_KGDB_H__ @@ -37,17 +13,18 @@ /* gdb locks */ #define KGDB_MAX_NO_CPUS 8 -/************************************************************************/ -/* BUFMAX defines the maximum number of characters in inbound/outbound buffers*/ -/* at least NUMREGBYTES*2 are needed for register packets */ -/* Longer buffer is needed to list all threads */ +/* + * BUFMAX defines the maximum number of characters in inbound/outbound buffers. + * At least NUMREGBYTES*2 are needed for register packets. + * Longer buffer is needed to list all threads. + */ #define BUFMAX 2048 /* - * Note that this register image is different from - * the register image that Linux produces at interrupt time. - * - * Linux's register image is defined by struct pt_regs in ptrace.h. + * Note that this register image is different from + * the register image that Linux produces at interrupt time. + * + * Linux's register image is defined by struct pt_regs in ptrace.h. */ enum regnames { /* Core Registers */ @@ -104,14 +81,14 @@ enum regnames { BFIN_RETX, BFIN_RETN, BFIN_RETE, - + /* Pseudo Registers */ BFIN_PC, BFIN_CC, BFIN_EXTRA1, /* Address of .text section. */ BFIN_EXTRA2, /* Address of .data section. */ BFIN_EXTRA3, /* Address of .bss section. */ - BFIN_FDPIC_EXEC, + BFIN_FDPIC_EXEC, BFIN_FDPIC_INTERP, /* MMRs */ @@ -126,7 +103,7 @@ enum regnames { static inline void arch_kgdb_breakpoint(void) { - asm(" EXCPT 2;"); + asm("EXCPT 2;"); } #define BREAK_INSTR_SIZE 2 #define CACHE_FLUSH_IS_SAFE 1 -- cgit v1.2.3 From 331693129d1764e38b15561e5712347fd591b2a9 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Wed, 4 Feb 2009 16:49:45 +0800 Subject: Blackfin arch: Fix Bug - Kernel does not boot if re-program clocks On BF561 EBIU_SDGCTL bit 31 controls the SDRAM external data path width, typically set 0 for a 32-bit bus width. On other Blackfin derivatives this bit should be set by default. Signed-off-by: Michael Hennerich Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/mem_init.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/blackfin/include') diff --git a/arch/blackfin/include/asm/mem_init.h b/arch/blackfin/include/asm/mem_init.h index 255a9316ad3..61f7487fbf1 100644 --- a/arch/blackfin/include/asm/mem_init.h +++ b/arch/blackfin/include/asm/mem_init.h @@ -115,7 +115,7 @@ #define mem_SDRRC (((CONFIG_SCLK_HZ / 1000) * SDRAM_Tref) / SDRAM_NRA) - (SDRAM_tRAS_num + SDRAM_tRP_num) /* Enable SCLK Out */ -#define mem_SDGCTL (0x80000000 | SCTLE | SDRAM_CL | SDRAM_tRAS | SDRAM_tRP | SDRAM_tRCD | SDRAM_tWR | PSS) +#define mem_SDGCTL (SCTLE | SDRAM_CL | SDRAM_tRAS | SDRAM_tRP | SDRAM_tRCD | SDRAM_tWR | PSS) #else #define mem_SDRRC CONFIG_MEM_SDRRC #define mem_SDGCTL CONFIG_MEM_SDGCTL -- cgit v1.2.3 From f556309ea0d6a4adb0ad9775e5a18aa3564a0e4f Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 4 Feb 2009 16:49:45 +0800 Subject: Blackfin arch: cleanup bf54x ifdef mess in gpio code merge more of the bf54x and !bf54x gpio code together to cut down on #ifdef mess Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/gpio.h | 58 ---------------------------------------- 1 file changed, 58 deletions(-) (limited to 'arch/blackfin/include') diff --git a/arch/blackfin/include/asm/gpio.h b/arch/blackfin/include/asm/gpio.h index 9477d82fcad..d4a082ef75b 100644 --- a/arch/blackfin/include/asm/gpio.h +++ b/arch/blackfin/include/asm/gpio.h @@ -27,60 +27,6 @@ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ -/* -* Number BF537/6/4 BF561 BF533/2/1 -* BF527/5/2 -* -* GPIO_0 PF0 PF0 PF0 -* GPIO_1 PF1 PF1 PF1 -* GPIO_2 PF2 PF2 PF2 -* GPIO_3 PF3 PF3 PF3 -* GPIO_4 PF4 PF4 PF4 -* GPIO_5 PF5 PF5 PF5 -* GPIO_6 PF6 PF6 PF6 -* GPIO_7 PF7 PF7 PF7 -* GPIO_8 PF8 PF8 PF8 -* GPIO_9 PF9 PF9 PF9 -* GPIO_10 PF10 PF10 PF10 -* GPIO_11 PF11 PF11 PF11 -* GPIO_12 PF12 PF12 PF12 -* GPIO_13 PF13 PF13 PF13 -* GPIO_14 PF14 PF14 PF14 -* GPIO_15 PF15 PF15 PF15 -* GPIO_16 PG0 PF16 -* GPIO_17 PG1 PF17 -* GPIO_18 PG2 PF18 -* GPIO_19 PG3 PF19 -* GPIO_20 PG4 PF20 -* GPIO_21 PG5 PF21 -* GPIO_22 PG6 PF22 -* GPIO_23 PG7 PF23 -* GPIO_24 PG8 PF24 -* GPIO_25 PG9 PF25 -* GPIO_26 PG10 PF26 -* GPIO_27 PG11 PF27 -* GPIO_28 PG12 PF28 -* GPIO_29 PG13 PF29 -* GPIO_30 PG14 PF30 -* GPIO_31 PG15 PF31 -* GPIO_32 PH0 PF32 -* GPIO_33 PH1 PF33 -* GPIO_34 PH2 PF34 -* GPIO_35 PH3 PF35 -* GPIO_36 PH4 PF36 -* GPIO_37 PH5 PF37 -* GPIO_38 PH6 PF38 -* GPIO_39 PH7 PF39 -* GPIO_40 PH8 PF40 -* GPIO_41 PH9 PF41 -* GPIO_42 PH10 PF42 -* GPIO_43 PH11 PF43 -* GPIO_44 PH12 PF44 -* GPIO_45 PH13 PF45 -* GPIO_46 PH14 PF46 -* GPIO_47 PH15 PF47 -*/ - #ifndef __ARCH_BLACKFIN_GPIO_H__ #define __ARCH_BLACKFIN_GPIO_H__ @@ -295,10 +241,6 @@ int bfin_gpio_direction_output(unsigned gpio, int value); int bfin_gpio_get_value(unsigned gpio); void bfin_gpio_set_value(unsigned gpio, int value); -#ifndef BF548_FAMILY -#define bfin_gpio_set_value(gpio, value) set_gpio_data(gpio, value) -#endif - #ifdef CONFIG_GPIOLIB #include /* cansleep wrappers */ -- cgit v1.2.3 From 3605fb09652beeb2e8244c52a9db5b76cc12295e Mon Sep 17 00:00:00 2001 From: Robin Getz Date: Wed, 4 Feb 2009 16:49:45 +0800 Subject: Blackfin arch: Add ability to count and display number of NMI interrupts Signed-off-by: Robin Getz Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/pda.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/blackfin/include') diff --git a/arch/blackfin/include/asm/pda.h b/arch/blackfin/include/asm/pda.h index bd8d4a7efeb..a67142740df 100644 --- a/arch/blackfin/include/asm/pda.h +++ b/arch/blackfin/include/asm/pda.h @@ -59,6 +59,7 @@ struct blackfin_pda { /* Per-processor Data Area */ unsigned long icplb_fault_addr; unsigned long retx; unsigned long seqstat; + unsigned int __nmi_count; /* number of times NMI asserted on this CPU */ }; extern struct blackfin_pda cpu_pda[]; -- cgit v1.2.3 From b52dae3139066765a7d96563e9cd33d9e60efe33 Mon Sep 17 00:00:00 2001 From: Sonic Zhang Date: Wed, 4 Feb 2009 16:49:45 +0800 Subject: Blackfin arch: Fix bug - Run "reboot" hangs bf518-ezbrd [Mike Frysinger : - setup P_DEFAULT_BOOT_SPI_CS for every arch based on the default bootrom behavior and convert all our boards to it - revert previous anomaly change ... bf51x is not affected by anomaly 05000353] Signed-off-by: Sonic Zhang Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/reboot.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/blackfin/include') diff --git a/arch/blackfin/include/asm/reboot.h b/arch/blackfin/include/asm/reboot.h index 4856d62b746..ae1e36329be 100644 --- a/arch/blackfin/include/asm/reboot.h +++ b/arch/blackfin/include/asm/reboot.h @@ -15,6 +15,6 @@ extern void native_machine_halt(void); extern void native_machine_power_off(void); /* common reboot workarounds */ -extern void bfin_gpio_reset_spi0_ssel1(void); +extern void bfin_reset_boot_spi_cs(unsigned short pin); #endif -- cgit v1.2.3 From aa9c33b496ca9434f26beaa1b447a6e2e5d8ad6a Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Wed, 4 Feb 2009 16:49:45 +0800 Subject: Blackfin arch: Faster Implementation of csum_tcpudp_nofold() Avoid conditional branch instructions during carry bit additions. Special thanks to Bernd. Simplify: Use ((len + proto) << 8) like every other __LITTLE_ENDIAN__ machine Cc: Bernd Schmidt Signed-off-by: Michael Hennerich Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/checksum.h | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-) (limited to 'arch/blackfin/include') diff --git a/arch/blackfin/include/asm/checksum.h b/arch/blackfin/include/asm/checksum.h index f67289a0d8d..793581fc955 100644 --- a/arch/blackfin/include/asm/checksum.h +++ b/arch/blackfin/include/asm/checksum.h @@ -63,23 +63,23 @@ static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, unsigned short proto, __wsum sum) { - - __asm__ ("%0 = %0 + %1;\n\t" - "CC = AC0;\n\t" - "if !CC jump 4;\n\t" - "%0 = %0 + %4;\n\t" - "%0 = %0 + %2;\n\t" - "CC = AC0;\n\t" - "if !CC jump 4;\n\t" - "%0 = %0 + %4;\n\t" - "%0 = %0 + %3;\n\t" - "CC = AC0;\n\t" - "if !CC jump 4;\n\t" - "%0 = %0 + %4;\n\t" - "NOP;\n\t" - : "=d" (sum) - : "d" (daddr), "d" (saddr), "d" ((ntohs(len)<<16)+proto*256), "d" (1), "0"(sum) - : "CC"); + unsigned int carry; + + __asm__ ("%0 = %0 + %2;\n\t" + "CC = AC0;\n\t" + "%1 = CC;\n\t" + "%0 = %0 + %1;\n\t" + "%0 = %0 + %3;\n\t" + "CC = AC0;\n\t" + "%1 = CC;\n\t" + "%0 = %0 + %1;\n\t" + "%0 = %0 + %4;\n\t" + "CC = AC0;\n\t" + "%1 = CC;\n\t" + "%0 = %0 + %1;\n\t" + : "=d" (sum), "=&d" (carry) + : "d" (daddr), "d" (saddr), "d" ((len + proto) << 8), "0"(sum) + : "CC"); return (sum); } -- cgit v1.2.3 From 4e653e04cc1c3553af539ffc81fb56d83d83c733 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Wed, 4 Feb 2009 16:49:45 +0800 Subject: Blackfin arch: Fix udelay implementation Avoid possible overflow during 32*32->32 multiplies. Reported-by: Marco Reppenhagen Signed-off-by: Michael Hennerich Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/delay.h | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'arch/blackfin/include') diff --git a/arch/blackfin/include/asm/delay.h b/arch/blackfin/include/asm/delay.h index 0889c3abb59..47f98c5067b 100644 --- a/arch/blackfin/include/asm/delay.h +++ b/arch/blackfin/include/asm/delay.h @@ -47,16 +47,15 @@ static inline void __delay(unsigned long loops) #include /* needed for HZ */ /* - * Use only for very small delays ( < 1 msec). Should probably use a - * lookup table, really, as the multiplications take much too long with - * short delays. This is a "reasonable" implementation, though (and the - * first constant multiplications gets optimized away if the delay is - * a constant) + * close approximation borrowed from m68knommu to avoid 64-bit math */ + +#define HZSCALE (268435456 / (1000000/HZ)) + static inline void udelay(unsigned long usecs) { extern unsigned long loops_per_jiffy; - __delay(usecs * loops_per_jiffy / (1000000 / HZ)); + __delay((((usecs * HZSCALE) >> 11) * (loops_per_jiffy >> 11)) >> 6); } #endif -- cgit v1.2.3 From c8e674125e03c5f36ccfd61d83b933e6956074b0 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Wed, 4 Feb 2009 16:49:45 +0800 Subject: Blackfin arch: Remove outdated code The removed version with the loop registers saved on the stack was originally intended to workaround the missing toolchain support for LoopReg Clobbers. Since our toolchain now supports these there is no point in keeping this workaround. And since we don't touch LoopRegs anymore we're no longer subject for ANOMALY_05000312. Signed-off-by: Michael Hennerich Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/delay.h | 24 +----------------------- 1 file changed, 1 insertion(+), 23 deletions(-) (limited to 'arch/blackfin/include') diff --git a/arch/blackfin/include/asm/delay.h b/arch/blackfin/include/asm/delay.h index 47f98c5067b..c31f91cc1d5 100644 --- a/arch/blackfin/include/asm/delay.h +++ b/arch/blackfin/include/asm/delay.h @@ -13,29 +13,7 @@ static inline void __delay(unsigned long loops) { - if (ANOMALY_05000312) { - /* Interrupted loads to loop registers -> bad */ - unsigned long tmp; - __asm__ __volatile__( - "[--SP] = LC0;" - "[--SP] = LT0;" - "[--SP] = LB0;" - "LSETUP (1f,1f) LC0 = %1;" - "1: NOP;" - /* We take advantage of the fact that LC0 is 0 at - * the end of the loop. Otherwise we'd need some - * NOPs after the CLI here. - */ - "CLI %0;" - "LB0 = [SP++];" - "LT0 = [SP++];" - "LC0 = [SP++];" - "STI %0;" - : "=d" (tmp) - : "a" (loops) - ); - } else - __asm__ __volatile__ ( +__asm__ __volatile__ ( "LSETUP(1f, 1f) LC0 = %0;" "1: NOP;" : -- cgit v1.2.3