aboutsummaryrefslogtreecommitdiff
path: root/arch/ppc/boot/simple/misc-spruce.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ppc/boot/simple/misc-spruce.c')
-rw-r--r--arch/ppc/boot/simple/misc-spruce.c271
1 files changed, 0 insertions, 271 deletions
diff --git a/arch/ppc/boot/simple/misc-spruce.c b/arch/ppc/boot/simple/misc-spruce.c
deleted file mode 100644
index 5b3a6c6f113..00000000000
--- a/arch/ppc/boot/simple/misc-spruce.c
+++ /dev/null
@@ -1,271 +0,0 @@
-/*
- * Misc. bootloader code for IBM Spruce reference platform
- *
- * Authors: Johnnie Peters <jpeters@mvista.com>
- * Matt Porter <mporter@mvista.com>
- *
- * Derived from arch/ppc/boot/prep/misc.c
- *
- * 2000-2001 (c) MontaVista, Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-
-#include <linux/types.h>
-#include <linux/pci.h>
-
-#include <asm/bootinfo.h>
-
-extern unsigned long decompress_kernel(unsigned long load_addr, int num_words,
- unsigned long cksum);
-
-/* Define some important locations of the Spruce. */
-#define SPRUCE_PCI_CONFIG_ADDR 0xfec00000
-#define SPRUCE_PCI_CONFIG_DATA 0xfec00004
-
-/* PCI configuration space access routines. */
-unsigned int *pci_config_address = (unsigned int *)SPRUCE_PCI_CONFIG_ADDR;
-unsigned char *pci_config_data = (unsigned char *)SPRUCE_PCI_CONFIG_DATA;
-
-void cpc700_pcibios_read_config_byte(unsigned char bus, unsigned char dev_fn,
- unsigned char offset, unsigned char *val)
-{
- out_le32(pci_config_address,
- (((bus & 0xff)<<16) | (dev_fn<<8) | (offset&0xfc) | 0x80000000));
-
- *val= (in_le32((unsigned *)pci_config_data) >> (8 * (offset & 3))) & 0xff;
-}
-
-void cpc700_pcibios_write_config_byte(unsigned char bus, unsigned char dev_fn,
- unsigned char offset, unsigned char val)
-{
- out_le32(pci_config_address,
- (((bus & 0xff)<<16) | (dev_fn<<8) | (offset&0xfc) | 0x80000000));
-
- out_8(pci_config_data + (offset&3), val);
-}
-
-void cpc700_pcibios_read_config_word(unsigned char bus, unsigned char dev_fn,
- unsigned char offset, unsigned short *val)
-{
- out_le32(pci_config_address,
- (((bus & 0xff)<<16) | (dev_fn<<8) | (offset&0xfc) | 0x80000000));
-
- *val= in_le16((unsigned short *)(pci_config_data + (offset&3)));
-}
-
-void cpc700_pcibios_write_config_word(unsigned char bus, unsigned char dev_fn,
- unsigned char offset, unsigned short val)
-{
- out_le32(pci_config_address,
- (((bus & 0xff)<<16) | (dev_fn<<8) | (offset&0xfc) | 0x80000000));
-
- out_le16((unsigned short *)(pci_config_data + (offset&3)), val);
-}
-
-void cpc700_pcibios_read_config_dword(unsigned char bus, unsigned char dev_fn,
- unsigned char offset, unsigned int *val)
-{
- out_le32(pci_config_address,
- (((bus & 0xff)<<16) | (dev_fn<<8) | (offset&0xfc) | 0x80000000));
-
- *val= in_le32((unsigned *)pci_config_data);
-}
-
-void cpc700_pcibios_write_config_dword(unsigned char bus, unsigned char dev_fn,
- unsigned char offset, unsigned int val)
-{
- out_le32(pci_config_address,
- (((bus & 0xff)<<16) | (dev_fn<<8) | (offset&0xfc) | 0x80000000));
-
- out_le32((unsigned *)pci_config_data, val);
-}
-
-#define PCNET32_WIO_RDP 0x10
-#define PCNET32_WIO_RAP 0x12
-#define PCNET32_WIO_RESET 0x14
-
-#define PCNET32_DWIO_RDP 0x10
-#define PCNET32_DWIO_RAP 0x14
-#define PCNET32_DWIO_RESET 0x18
-
-/* Processor interface config register access */
-#define PIFCFGADDR 0xff500000
-#define PIFCFGDATA 0xff500004
-
-#define PLBMIFOPT 0x18 /* PLB Master Interface Options */
-
-#define MEM_MBEN 0x24
-#define MEM_TYPE 0x28
-#define MEM_B1SA 0x3c
-#define MEM_B1EA 0x5c
-#define MEM_B2SA 0x40
-#define MEM_B2EA 0x60
-
-unsigned long
-get_mem_size(void)
-{
- int loop;
- unsigned long mem_size = 0;
- unsigned long mem_mben;
- unsigned long mem_type;
- unsigned long mem_start;
- unsigned long mem_end;
- volatile int *mem_addr = (int *)0xff500008;
- volatile int *mem_data = (int *)0xff50000c;
-
- /* Get the size of memory from the memory controller. */
- *mem_addr = MEM_MBEN;
- asm("sync");
- mem_mben = *mem_data;
- asm("sync");
- for(loop = 0; loop < 1000; loop++);
-
- *mem_addr = MEM_TYPE;
- asm("sync");
- mem_type = *mem_data;
- asm("sync");
- for(loop = 0; loop < 1000; loop++);
-
- *mem_addr = MEM_TYPE;
- /* Confirm bank 1 has DRAM memory */
- if ((mem_mben & 0x40000000) &&
- ((mem_type & 0x30000000) == 0x10000000)) {
- *mem_addr = MEM_B1SA;
- asm("sync");
- mem_start = *mem_data;
- asm("sync");
- for(loop = 0; loop < 1000; loop++);
-
- *mem_addr = MEM_B1EA;
- asm("sync");
- mem_end = *mem_data;
- asm("sync");
- for(loop = 0; loop < 1000; loop++);
-
- mem_size = mem_end - mem_start + 0x100000;
- }
-
- /* Confirm bank 2 has DRAM memory */
- if ((mem_mben & 0x20000000) &&
- ((mem_type & 0xc000000) == 0x4000000)) {
- *mem_addr = MEM_B2SA;
- asm("sync");
- mem_start = *mem_data;
- asm("sync");
- for(loop = 0; loop < 1000; loop++);
-
- *mem_addr = MEM_B2EA;
- asm("sync");
- mem_end = *mem_data;
- asm("sync");
- for(loop = 0; loop < 1000; loop++);
-
- mem_size += mem_end - mem_start + 0x100000;
- }
- return mem_size;
-}
-
-unsigned long
-load_kernel(unsigned long load_addr, int num_words, unsigned long cksum,
- void *ign1, void *ign2)
-{
- int csr0;
- int csr_id;
- int pci_devfn;
- int found_multi = 0;
- unsigned short vendor;
- unsigned short device;
- unsigned short command;
- unsigned char header_type;
- unsigned int bar0;
- volatile int *pif_addr = (int *)0xff500000;
- volatile int *pif_data = (int *)0xff500004;
-
- /*
- * Gah, these firmware guys need to learn that hardware
- * byte swapping is evil! Disable all hardware byte
- * swapping so it doesn't hurt anyone.
- */
- *pif_addr = PLBMIFOPT;
- asm("sync");
- *pif_data = 0x00000000;
- asm("sync");
-
- /* Search out and turn off the PcNet ethernet boot device. */
- for (pci_devfn = 1; pci_devfn < 0xff; pci_devfn++) {
- if (PCI_FUNC(pci_devfn) && !found_multi)
- continue;
-
- cpc700_pcibios_read_config_byte(0, pci_devfn,
- PCI_HEADER_TYPE, &header_type);
-
- if (!PCI_FUNC(pci_devfn))
- found_multi = header_type & 0x80;
-
- cpc700_pcibios_read_config_word(0, pci_devfn, PCI_VENDOR_ID,
- &vendor);
-
- if (vendor != 0xffff) {
- cpc700_pcibios_read_config_word(0, pci_devfn,
- PCI_DEVICE_ID, &device);
-
- /* If this PCI device is the Lance PCNet board then turn it off */
- if ((vendor == PCI_VENDOR_ID_AMD) &&
- (device == PCI_DEVICE_ID_AMD_LANCE)) {
-
- /* Turn on I/O Space on the board. */
- cpc700_pcibios_read_config_word(0, pci_devfn,
- PCI_COMMAND, &command);
- command |= 0x1;
- cpc700_pcibios_write_config_word(0, pci_devfn,
- PCI_COMMAND, command);
-
- /* Get the I/O space address */
- cpc700_pcibios_read_config_dword(0, pci_devfn,
- PCI_BASE_ADDRESS_0, &bar0);
- bar0 &= 0xfffffffe;
-
- /* Reset the PCNet Board */
- inl (bar0+PCNET32_DWIO_RESET);
- inw (bar0+PCNET32_WIO_RESET);
-
- /* First do a work oriented read of csr0. If the value is
- * 4 then this is the correct mode to access the board.
- * If not try a double word ortiented read.
- */
- outw(0, bar0 + PCNET32_WIO_RAP);
- csr0 = inw(bar0 + PCNET32_WIO_RDP);
-
- if (csr0 == 4) {
- /* Check the Chip id register */
- outw(88, bar0 + PCNET32_WIO_RAP);
- csr_id = inw(bar0 + PCNET32_WIO_RDP);
-
- if (csr_id) {
- /* This is the valid mode - set the stop bit */
- outw(0, bar0 + PCNET32_WIO_RAP);
- outw(csr0, bar0 + PCNET32_WIO_RDP);
- }
- } else {
- outl(0, bar0 + PCNET32_DWIO_RAP);
- csr0 = inl(bar0 + PCNET32_DWIO_RDP);
- if (csr0 == 4) {
- /* Check the Chip id register */
- outl(88, bar0 + PCNET32_WIO_RAP);
- csr_id = inl(bar0 + PCNET32_WIO_RDP);
-
- if (csr_id) {
- /* This is the valid mode - set the stop bit*/
- outl(0, bar0 + PCNET32_WIO_RAP);
- outl(csr0, bar0 + PCNET32_WIO_RDP);
- }
- }
- }
- }
- }
- }
-
- return decompress_kernel(load_addr, num_words, cksum);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 11:50:04 +0000