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This patch allows to boot from bootsector of first bootable partition

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using "boot hd:%BOOT"

As explained in:

"PowerPC Microprocessor Common Hardware Reference Platform (CHRP)
System binding to:
IEEE Std 1275-1994 Standard for Boot (Initialization, Configuration)
Firmware
Revision: 1.8"

"Chapter 11.1.2. Open Method Algorith"

Signed-off-by: Laurent Vivier <Laurent@vivier.info>



git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@552 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Laurent Vivier
2009-08-12 19:55:31 +00:00
committed by Laurent Vivier
parent 3fbece06c9
commit 6a16562087
4 changed files with 88 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

63
arch/ppc/qemu/main.c
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@@ -321,68 +321,45 @@ try_chrp_script(const char *of_path, const char *param, const char *script_path)
close_io( fd );
}
#define QUIK_SECOND_BASEADDR 0x3e0000
#define QUIK_FIRST_BASEADDR 0x3f4000
#define QUIK_SECOND_SIZE (QUIK_FIRST_BASEADDR - QUIK_SECOND_BASEADDR)
#define QUIK_FIRST_INFO_OFF 0x2c8
struct first_info {
char quik_vers[8];
int nblocks;
int blocksize;
unsigned second_base;
int conf_part;
char conf_file[32];
unsigned blknos[64];
};
#define OLDWORLD_BOOTCODE_BASEADDR (0x3f4000)
static void
quik_startup( void )
oldworld_boot( void )
{
int fd;
int len;
const char *path = "hd:2";
union {
char buffer[1024];
int first_word;
struct {
char pad[QUIK_FIRST_INFO_OFF];
struct first_info fi;
} fi;
} u;
int len, total;
const char *path = "hd:,%BOOT";
char *bootcode;
if ((fd = open_io(path)) == -1) {
ELF_DPRINTF("Can't open %s\n", path);
return;
}
seek_io(fd, 0);
len = read_io(fd, u.buffer, sizeof(u));
total = 0;
bootcode = (char*)OLDWORLD_BOOTCODE_BASEADDR;
while(1) {
if (seek_io(fd, total) == -1)
break;
len = read_io(fd, bootcode, 512);
bootcode += len;
total += len;
}
close_io( fd );
if (len == -1) {
if (total == 0) {
ELF_DPRINTF("Can't read %s\n", path);
return;
}
/* is it quik ? */
if (memcmp(u.fi.fi.quik_vers, "QUIK", 4))
return;
encode_bootpath(path, "Linux");
if( ofmem_claim( QUIK_FIRST_BASEADDR, len, 0 ) == -1 )
if( ofmem_claim( OLDWORLD_BOOTCODE_BASEADDR, total, 0 ) == -1 )
fatal_error("Claim failed!\n");
memcpy((char*)QUIK_FIRST_BASEADDR, u.buffer, len);
/* quik fist level doesn't claim second level memory */
if( ofmem_claim( QUIK_SECOND_BASEADDR, QUIK_SECOND_SIZE, 0 ) == -1 )
fatal_error("Claim failed!\n");
call_elf(0, 0, QUIK_FIRST_BASEADDR);
call_elf(0, 0, OLDWORLD_BOOTCODE_BASEADDR);
return;
}
@@ -495,7 +472,7 @@ boot( void )
check_preloaded_kernel();
}
if (boot_device == 'c') {
quik_startup();
oldworld_boot();
}
yaboot_startup();
}