diff options
| author | Zheng Bao <zheng.bao@amd.com> | 2010-03-17 03:10:39 +0000 |
|---|---|---|
| committer | Zheng Bao <Zheng.Bao@amd.com> | 2010-03-17 03:10:39 +0000 |
| commit | d4e77df5797361db39058f478ee300e9638435f9 (patch) | |
| tree | 6ee826beeaeeee44d4e60b13879ea06afeebc7fd /src | |
| parent | 68f542cdf82efe257ee4251047a264558dd8645f (diff) | |
The SB600 also has the BootFailTimer. We should disable it,
otherwise it will keeps reboot. The comment was also added in
detail to make less confusing when we debug SB600/SB700.
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5240 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src')
| -rw-r--r-- | src/southbridge/amd/sb600/sb600_early_setup.c | 10 | ||||
| -rw-r--r-- | src/southbridge/amd/sb700/sb700_early_setup.c | 5 |
2 files changed, 13 insertions, 2 deletions
diff --git a/src/southbridge/amd/sb600/sb600_early_setup.c b/src/southbridge/amd/sb600/sb600_early_setup.c index 7bb910a4b8..29c215adba 100644 --- a/src/southbridge/amd/sb600/sb600_early_setup.c +++ b/src/southbridge/amd/sb600/sb600_early_setup.c @@ -71,8 +71,16 @@ static void sb600_lpc_init(void) u32 reg32; device_t dev; - /* Enable lpc controller */ dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); /* SMBUS controller */ + /* NOTE: Set BootTimerDisable, otherwise it would keep rebooting!! + * This bit has no meaning if debug strap is not enabled. So if the + * board keeps rebooting and the code fails to reach here, we could + * disable the debug strap first. */ + reg32 = pci_read_config32(dev, 0x4C); + reg32 |= 1 << 31; + pci_write_config32(dev, 0x4C, reg32); + + /* Enable lpc controller */ reg32 = pci_read_config32(dev, 0x64); reg32 |= 1 << 20; pci_write_config32(dev, 0x64, reg32); diff --git a/src/southbridge/amd/sb700/sb700_early_setup.c b/src/southbridge/amd/sb700/sb700_early_setup.c index b237ef0f08..a063c70cf9 100644 --- a/src/southbridge/amd/sb700/sb700_early_setup.c +++ b/src/southbridge/amd/sb700/sb700_early_setup.c @@ -102,8 +102,11 @@ static void sb700_lpc_init(void) u32 reg32; device_t dev; - /* NOTE: Set BootTimerDisable, otherwise it would keep rebooting!! */ dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); /* SMBUS controller */ + /* NOTE: Set BootTimerDisable, otherwise it would keep rebooting!! + * This bit has no meaning if debug strap is not enabled. So if the + * board keeps rebooting and the code fails to reach here, we could + * disable the debug strap first. */ reg32 = pci_read_config32(dev, 0x4C); reg32 |= 1 << 31; pci_write_config32(dev, 0x4C, reg32); |