Dave Frodin (dave.frodin@se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8661
-gerrit
commit 8ae18a036fe2fd787355615ff801b20e24a99446 Author: Dave Frodin dave.frodin@se-eng.com Date: Fri Mar 13 08:22:17 2015 -0600
southbridge/amd/pi: Enable early I/O decode to LPC
The decode of UART addresses down to the LPC bus needs to occur early to allow romstage console messages to be seen.
Change-Id: I6636946af4ad5320a5a46c2920b4f06345b5f806 Signed-off-by: Dave Frodin dave.frodin@se-eng.com --- src/southbridge/amd/pi/hudson/early_setup.c | 9 +++++++++ src/southbridge/amd/pi/hudson/hudson.h | 1 + 2 files changed, 10 insertions(+)
diff --git a/src/southbridge/amd/pi/hudson/early_setup.c b/src/southbridge/amd/pi/hudson/early_setup.c index 9500d0e..af3240b 100644 --- a/src/southbridge/amd/pi/hudson/early_setup.c +++ b/src/southbridge/amd/pi/hudson/early_setup.c @@ -93,6 +93,15 @@ void hudson_lpc_port80(void) pci_write_config8(dev, 0x4a, byte); }
+void hudson_lpc_decode(void) +{ + device_t dev; + + /* Enable I/O decode to LPC bus */ + dev = PCI_DEV(0, 0x14, 3); + pci_write_config32(dev, 0x44, 0xFF03FFD5); +} + int s3_save_nvram_early(u32 dword, int size, int nvram_pos) { int i; diff --git a/src/southbridge/amd/pi/hudson/hudson.h b/src/southbridge/amd/pi/hudson/hudson.h index 90c3205..6116713 100644 --- a/src/southbridge/amd/pi/hudson/hudson.h +++ b/src/southbridge/amd/pi/hudson/hudson.h @@ -76,6 +76,7 @@ u16 pm_read16(u16 reg);
#ifdef __PRE_RAM__ void hudson_lpc_port80(void); +void hudson_lpc_decode(void); void hudson_pci_port80(void); void hudson_clk_output_48Mhz(void);