diff options
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/i386/prefix/mromprefix.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/arch/i386/prefix/mromprefix.S b/src/arch/i386/prefix/mromprefix.S index d7b7fc3..abe1c9e 100644 --- a/src/arch/i386/prefix/mromprefix.S +++ b/src/arch/i386/prefix/mromprefix.S @@ -154,6 +154,18 @@ find_mem_bar: movw $PCI_BAR_EXPROM, %di call pci_write_config_dword + /* Locate our ROM image */ +1: addr32 es cmpw $0xaa55, (%eax) + stc + jne 99f + addr32 es cmpl $_build_id, build_id(%eax) + je 2f + addr32 es movzbl 2(%eax), %ecx + shll $9, %ecx + addl %ecx, %eax + jmp 1b +2: + /* Copy payload to buffer, or set buffer address to BAR address */ testl %esi, %esi jz 1f |