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romcc:

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- Set __PRE_RAM__ define per default
- Properly handle ignored (#ifdef'd out) #include lines

amd/serengeti_cheetah_fam10:
- write ACPI files to $(obj) instead of the top dir (alias $(CURDIR))

tinybootblock:
- provide a way to define code that should be added to the bootblock,
  to map the entire ROM for use by CBFS

amd/model_fxx, amd/model_10xxx:
- add CONFIG_SSE

walkcbfs.S:
- eliminate the use of two registers, to make space for romcc to wiggle

amd/serengeti_cheetah_fam10:
- use the enable_rom framework. not entirely functional yet

Boot-tested on emulation/qemu-x86
Build-tested on amd/serengeti_cheetah_fam10
amd/serengeti_cheetah_fam10 fails in amdht/ somewhere, but builds

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4994 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Patrick Georgi
2009-12-31 12:56:53 +00:00
parent 9db833bec3
commit 1bb6828900
15 changed files with 135 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/arch/i386/Kconfig
View File

@@ -43,3 +43,9 @@ config MAX_REBOOT_CNT
config TINY_BOOTBLOCK
bool
default n
config BOOTBLOCK_NORTHBRIDGE_INIT
string
config BOOTBLOCK_SOUTHBRIDGE_INIT
string

10
src/arch/i386/Makefile.tinybootblock.inc
View File

@@ -30,9 +30,17 @@ bootblock_inc += $(src)/cpu/x86/16bit/entry16.inc
bootblock_inc += $(src)/cpu/x86/16bit/reset16.inc
bootblock_inc += $(src)/cpu/x86/32bit/entry32.inc
bootblock_inc += $(src)/arch/i386/lib/id.inc
ifeq ($(CONFIG_SSE),y)
bootblock_inc += $(src)/cpu/x86/sse_enable.inc
endif
bootblock_inc += $(obj)/mainboard/$(MAINBOARDDIR)/bootblock.inc
bootblock_inc += $(src)/arch/i386/lib/walkcbfs.S
bootblock_romccflags := -mcpu=i386
ifeq ($(CONFIG_SSE),y)
bootblock_romccflags := -mcpu=k7 -msse
endif
$(obj)/bootblock/ldscript.ld: $(bootblock_ldscripts) $(obj)/ldoptions
mkdir -p $(obj)/bootblock
printf '$(foreach ldscript,ldoptions $(bootblock_lds),INCLUDE "$(ldscript)"\n)' > $@
@@ -48,7 +56,7 @@ $(obj)/mainboard/$(MAINBOARDDIR)/bootblock.s: $(obj)/bootblock/bootblock.c
$(CC) -x assembler-with-cpp -DASSEMBLY -E -I$(src)/include -I$(src)/arch/i386/include -I$(obj) -I$(obj)/bootblock -include $(obj)/config.h -I. -I$(src) $< > $@.new && mv $@.new $@
$(obj)/mainboard/$(MAINBOARDDIR)/bootblock.inc: $(obj)/romcc $(src)/arch/i386/init/bootblock.c
$(obj)/romcc $(ROMCCFLAGS) $(INCLUDES) $(src)/arch/i386/init/bootblock.c -o $@
$(obj)/romcc $(bootblock_romccflags) -O2 $(ROMCCFLAGS) $(INCLUDES) $(src)/arch/i386/init/bootblock.c -o $@
$(obj)/bootblock.elf: $(obj)/mainboard/$(MAINBOARDDIR)/bootblock.o $(obj)/bootblock/ldscript.ld
@printf " LINK $(subst $(obj)/,,$(@))\n"

32
src/arch/i386/init/bootblock.c
View File

@@ -1,24 +1,46 @@
#if CONFIG_LOGICAL_CPUS && \
(defined(CONFIG_BOOTBLOCK_NORTHBRIDGE_INIT) || defined(CONFIG_BOOTBLOCK_SOUTHBRIDGE_INIT))
#include <cpu/x86/lapic/boot_cpu.c>
#else
#define boot_cpu(x) 1
#endif
#ifdef CONFIG_BOOTBLOCK_NORTHBRIDGE_INIT
#include CONFIG_BOOTBLOCK_NORTHBRIDGE_INIT
#else
static void bootblock_northbridge_init(void) { }
#endif
#ifdef CONFIG_BOOTBLOCK_SOUTHBRIDGE_INIT
#include CONFIG_BOOTBLOCK_SOUTHBRIDGE_INIT
#else
static void bootblock_southbridge_init(void) { }
#endif
static unsigned long findstage(char* target)
{
unsigned long entry;
asm volatile (
"mov $1f, %%esp\n\t"
"jmp walkcbfs\n\t"
"1:\n\t" : "=a" (entry) : "S" (target) : "ebx", "ecx", "edx", "edi", "ebp", "esp");
"1:\n\t" : "=a" (entry) : "S" (target) : "ebx", "ecx", "edi", "esp");
return entry;
}
static void call(unsigned long addr)
static void call(unsigned long addr, unsigned long bist)
{
asm volatile ("jmp %0\n\t" : : "r" (addr));
asm volatile ("jmp %0\n\t" : : "r" (addr), "a" (bist));
}
static void main(void)
static void main(unsigned long bist)
{
if (boot_cpu()) {
bootblock_northbridge_init();
bootblock_southbridge_init();
}
const char* target1 = "fallback/romstage";
unsigned long entry;
entry = findstage(target1);
if (entry) call(entry);
if (entry) call(entry, bist);
asm volatile ("1:\n\thlt\n\tjmp 1b\n\t");
}

42
src/arch/i386/lib/walkcbfs.S
View File

@@ -25,18 +25,9 @@
input %esi: filename
input %esp: return address (not pointer to return address!)
output %eax: entry point
clobbers %ebx, %ecx, %edx, %edi, %ebp
clobbers %ebx, %ecx, %edi
*/
walkcbfs:
mov %esi, %ebp /* stash away filename pointer */
mov $0, %edx
1:
cmpb $0, (%edx,%esi)
jz 2f
add $1, %edx
jmp 1b
2:
add $1, %edx
mov CBFS_HEADER_PTR, %eax
mov CBFS_HEADER_ROMSIZE(%eax), %ecx
bswap %ecx
@@ -45,15 +36,20 @@ walkcbfs:
mov CBFS_HEADER_OFFSET(%eax), %ecx
bswap %ecx
add %ecx, %ebx
mov CBFS_HEADER_ALIGN(%eax), %eax
bswap %eax
sub $1, %eax
/* determine filename length */
mov $0, %eax
1:
cmpb $0, (%eax,%esi)
jz 2f
add $1, %eax
jmp 1b
2:
add $1, %eax
walker:
mov %ebp, %esi
mov %ebx, %edi
add $CBFS_FILE_STRUCTSIZE, %edi /* edi = address of first byte after struct cbfs_file */
mov %edx, %ecx
mov %eax, %ecx
repe cmpsb
# zero flag set if strings are equal
jnz tryharder
@@ -67,21 +63,29 @@ walker:
jmp *%esp
tryharder:
sub %ebx, %edi /* edi = # of walked bytes */
sub %edi, %esi /* esi = start of filename */
/* ebx = ecx = (current+offset+len+ALIGN-1) & ~(ALIGN-1) */
mov CBFS_FILE_OFFSET(%ebx), %ecx
bswap %ecx
add %ebx, %ecx
mov CBFS_FILE_LEN(%ebx), %edi
bswap %edi
add %edi, %ecx
add %eax, %ecx
mov %eax, %edi
mov CBFS_HEADER_PTR, %ebx
mov CBFS_HEADER_ALIGN(%ebx), %ebx
bswap %ebx
sub $1, %ebx
add %ebx, %ecx
mov %ebx, %edi
not %edi
and %edi, %ecx
mov %ecx, %ebx
/* look if we should exit */
mov CBFS_HEADER_PTR, %esi
mov CBFS_HEADER_ROMSIZE(%esi), %ecx
mov CBFS_HEADER_PTR, %ecx
mov CBFS_HEADER_ROMSIZE(%ecx), %ecx
bswap %ecx
not %ecx
add $1, %ecx