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x86: Fix sc520 memory size reporting

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There is an error in how the assembler version of the sc520 memory size
reporting code works. As a result, it will only ever report at most the
size of one bank of RAM

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
This commit is contained in:
Graeme Russ 2010-04-24 00:05:40 +10:00 committed by Wolfgang Denk
parent 9e08efcfee
commit 4dba333b3c
1 changed files with 17 additions and 18 deletions
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35
arch/i386/cpu/sc520/sc520_asm.S
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@ -503,38 +503,37 @@ dram_done:
movl $DRCBENDADR, %edi /* DRAM ending address register */
movl (%edi), %eax
bank0: movl (%edi), %eax
movl %eax, %ecx
andl $0x80000000, %ecx
jz bank2
andl $0x7f000000, %eax
shrl $2, %eax
movl %eax, %ebx
bank2: movl (%edi), %eax
movl %eax, %ecx
andl $0x00800000, %ecx
andl $0x00000080, %ecx
jz bank1
andl $0x007f0000, %eax
shll $6, %eax
andl $0x0000007f, %eax
shll $22, %eax
movl %eax, %ebx
bank1: movl (%edi), %eax
movl %eax, %ecx
andl $0x00008000, %ecx
jz bank0
jz bank2
andl $0x00007f00, %eax
shll $14, %eax
movl %eax, %ebx
bank0: movl (%edi), %eax
bank2: movl (%edi), %eax
movl %eax, %ecx
andl $0x00000080, %ecx
jz done
andl $0x0000007f, %eax
shll $22, %eax
andl $0x00800000, %ecx
jz bank3
andl $0x007f0000, %eax
shll $6, %eax
movl %eax, %ebx
bank3: movl (%edi), %eax
movl %eax, %ecx
andl $0x80000000, %ecx
jz done
andl $0x7f000000, %eax
shrl $2, %eax
movl %eax, %ebx
done:
movl %ebx, %eax