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Use firmware configuration instead of NVRAM (initial patch by Aurelien Jarno)

Browse Source 
Use firmware configuration device for boot device, kernel, initrd and
kernel command line parameters on PPC, Sparc32 and Sparc64.


git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@479 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Blue Swirl
2009-03-08 09:45:25 +00:00
parent b73bf5229a
commit b098842b5b
4 changed files with 45 additions and 265 deletions
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47
arch/ppc/qemu/main.c
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@@ -22,6 +22,8 @@
#include "libc/vsprintf.h"
#include "kernel.h"
#include "ofmem.h"
#define NO_QEMU_PROTOS
#include "openbios/fw_cfg.h"
//#define DEBUG_ELF
@@ -319,24 +321,6 @@ try_bootinfo(const char *path, const char *param)
close_io( fd );
}
static uint8_t nvram_read(uint16_t offset)
{
outb(offset & 0xff, NVRAM_ADDR_LO);
outb(offset >> 8, NVRAM_ADDR_HI);
return inb(NVRAM_DATA);
}
static uint32_t nvram_read_be32(uint16_t offset)
{
uint32_t ret;
ret = nvram_read(offset) << 24;
ret |= nvram_read(offset + 1) << 16;
ret |= nvram_read(offset + 2) << 8;
ret |= nvram_read(offset + 3);
return ret;
}
#define QUIK_SECOND_BASEADDR 0x3e0000
#define QUIK_FIRST_BASEADDR 0x3f4000
#define QUIK_SECOND_SIZE (QUIK_FIRST_BASEADDR - QUIK_SECOND_BASEADDR)
@@ -446,8 +430,7 @@ yaboot_startup( void )
try_path(path, param);
try_bootinfo(path, param);
} else {
char boot_device = nvram_read(0x34);
uint16_t boot_device = fw_cfg_read_i16(FW_CFG_BOOT_DEVICE);
switch (boot_device) {
case 'c':
path = strdup("hd:0");
@@ -474,21 +457,22 @@ static void check_preloaded_kernel(void)
{
unsigned long kernel_image, kernel_size;
unsigned long initrd_image, initrd_size;
unsigned long cmdline, cmdline_len;
const char * kernel_cmdline;
kernel_size = nvram_read_be32(0x3c);
kernel_size = fw_cfg_read_i32(FW_CFG_KERNEL_SIZE);
if (kernel_size) {
kernel_image = nvram_read_be32(0x38);
cmdline = nvram_read_be32(0x40);
cmdline_len = nvram_read_be32(0x44);
initrd_image = nvram_read_be32(0x48);
initrd_size = nvram_read_be32(0x4c);
kernel_image = fw_cfg_read_i32(FW_CFG_KERNEL_ADDR);
kernel_cmdline = (const char *) fw_cfg_read_i32(FW_CFG_KERNEL_CMDLINE);
initrd_image = fw_cfg_read_i32(FW_CFG_INITRD_ADDR);
initrd_size = fw_cfg_read_i32(FW_CFG_INITRD_SIZE);
printk("[ppc] Kernel already loaded (0x%8.8lx + 0x%8.8lx) "
"(initrd 0x%8.8lx + 0x%8.8lx)\n",
kernel_image, kernel_size, initrd_image, initrd_size);
if (cmdline_len > 0) {
phandle_t ph = find_dev("/chosen");
set_property(ph, "bootargs", strdup((char *)cmdline), cmdline_len + 1);
if (kernel_cmdline) {
phandle_t ph;
printk("[ppc] Kernel command line: %s\n", kernel_cmdline);
ph = find_dev("/chosen");
set_property(ph, "bootargs", strdup(kernel_cmdline), strlen(kernel_cmdline) + 1);
}
call_elf(initrd_image, initrd_size, kernel_image);
}
@@ -501,7 +485,8 @@ static void check_preloaded_kernel(void)
void
boot( void )
{
char boot_device = nvram_read(0x34);
uint16_t boot_device = fw_cfg_read_i16(FW_CFG_BOOT_DEVICE);
fword("update-chosen");
if (boot_device == 'm') {
check_preloaded_kernel();