%ebx will hold low-level boot flags and must be preserved
Signed-off-by: Graeme Russ graeme.russ@gmail.com --- arch/i386/cpu/sc520/sc520_asm.S | 15 ++++++++++----- arch/i386/cpu/start.S | 4 ++-- 2 files changed, 12 insertions(+), 7 deletions(-)
diff --git a/arch/i386/cpu/sc520/sc520_asm.S b/arch/i386/cpu/sc520/sc520_asm.S index a18e2c3..63c14b7 100644 --- a/arch/i386/cpu/sc520/sc520_asm.S +++ b/arch/i386/cpu/sc520/sc520_asm.S @@ -174,6 +174,9 @@
.globl mem_init mem_init: + /* Preserve Boot Flags */ + movl %ebx, %ebp + /* initialize dram controller registers */ xorw %ax, %ax movl $DBCTL, %edi @@ -517,6 +520,8 @@ bad_ram: jmp bad_reint
dram_done: + /* Restore Boot Flags */ + movl %ebx, %ebp jmp mem_init_ret
#if CONFIG_SYS_SDRAM_ECC_ENABLE @@ -579,7 +584,7 @@ bank0: movl (%edi), %eax jz bank1 andl $0x0000007f, %eax shll $22, %eax - movl %eax, %ebx + movl %eax, %edx
bank1: movl (%edi), %eax movl %eax, %ecx @@ -587,7 +592,7 @@ bank1: movl (%edi), %eax jz bank2 andl $0x00007f00, %eax shll $14, %eax - movl %eax, %ebx + movl %eax, %edx
bank2: movl (%edi), %eax movl %eax, %ecx @@ -595,7 +600,7 @@ bank2: movl (%edi), %eax jz bank3 andl $0x007f0000, %eax shll $6, %eax - movl %eax, %ebx + movl %eax, %edx
bank3: movl (%edi), %eax movl %eax, %ecx @@ -603,8 +608,8 @@ bank3: movl (%edi), %eax jz done andl $0x7f000000, %eax shrl $2, %eax - movl %eax, %ebx + movl %eax, %edx
done: - movl %ebx, %eax + movl %edx, %eax jmp get_mem_size_ret diff --git a/arch/i386/cpu/start.S b/arch/i386/cpu/start.S index 551965f..63f7334 100644 --- a/arch/i386/cpu/start.S +++ b/arch/i386/cpu/start.S @@ -118,8 +118,8 @@ mem_ok: cmpl $0, %eax jne die push $0x55aa55aa - popl %ebx - cmpl $0x55aa55aa, %ebx + popl %ecx + cmpl $0x55aa55aa, %ecx jne die
wbinvd