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| author | Michael Brown <mcb30@ipxe.org> | 2013-03-11 01:43:12 +0000 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2013-03-11 01:48:00 +0000 |
| commit | cb37d92ff6915b511163e0160b5587cce4d9bb1c (patch) | |
| tree | 4198abc50e50a197fe97deabe9d69077c7096cfc /src | |
| parent | 2629b7e2cd8975f02a159db461d2460b9275545e (diff) | |
| download | ipxe-cb37d92ff6915b511163e0160b5587cce4d9bb1c.zip ipxe-cb37d92ff6915b511163e0160b5587cce4d9bb1c.tar.gz ipxe-cb37d92ff6915b511163e0160b5587cce4d9bb1c.tar.bz2 | |
[romprefix] Display only one "Ctrl-B" prompt per PCI device during POST
If a multifunction PCI device exposes an iPXE ROM via each function,
then each function will display a "Press Ctrl-B to configure iPXE"
prompt, and delay for two seconds. Since a single instance of iPXE
can drive all functions on the multifunction device, this simply adds
unnecessary delay to the boot process.
Fix by inhibiting the "Press Ctrl-B" prompt for all except the first
function on a PCI device.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/i386/prefix/romprefix.S | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/arch/i386/prefix/romprefix.S b/src/arch/i386/prefix/romprefix.S index 18fef75..091673d 100644 --- a/src/arch/i386/prefix/romprefix.S +++ b/src/arch/i386/prefix/romprefix.S @@ -23,6 +23,7 @@ FILE_LICENCE ( GPL2_OR_LATER ) ( PMM_HANDLE_BASE | 0x00001000 ) #define PMM_HANDLE_BASE_DECOMPRESS_TO \ ( PMM_HANDLE_BASE | 0x00002000 ) +#define PCI_FUNC_MASK 0x07 /* ROM banner timeout. Based on the configurable BANNER_TIMEOUT in * config.h, but converted to a number of (18Hz) timer ticks, and @@ -422,6 +423,9 @@ no_pmm: xorw %di, %di cs rep movsb + /* Skip prompt if this is not the first PCI function */ + testb $PCI_FUNC_MASK, init_pci_busdevfn + jnz no_shell /* Prompt for POST-time shell */ movw $init_message_prompt, %si xorw %di, %di @@ -440,7 +444,7 @@ no_pmm: movw $init_message_done, %si call print_message popf - jnz 2f + jnz no_shell /* Ctrl-B was pressed: invoke iPXE. The keypress will be * picked up by the initial shell prompt, and we will drop * into a shell. @@ -448,7 +452,11 @@ no_pmm: xorl %ebp, %ebp /* Inhibit use of INT 15,e820 and INT 15,e801 */ pushw %cs call exec -2: +no_shell: + movb $( '\n' ), %al + xorw %di, %di + call print_character + /* Restore registers */ popw %gs popw %fs @@ -595,7 +603,7 @@ init_message_done: * */ init_pci_busdevfn: - .word 0xffff + .word 0 .size init_pci_busdevfn, . - init_pci_busdevfn /* Image source area |