diff options
| author | Keith Hui <buurin@gmail.com> | 2020-01-11 03:49:17 -0500 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-03-03 07:36:53 +0000 |
| commit | ce622389983f941f5b86907c41c9c843fadccce0 (patch) | |
| tree | 78f721aa625ed177ae36b6c94915ddd00e475ea3 /src/southbridge | |
| parent | 7af59f709a89d20c1691d1a7316b136c7024aaf9 (diff) | |
sb/intel/i82371eb: Support reconfiguring GPO22/23
XOE# and XDIR# can be used as GPOs 23/22 if X-Bus functionality is not
required. Turns out asus/p2b-ls is using them to control termination
for the onboard SCSI buses. Add support to allow this reconfiguration.
Change-Id: I2dab6fafbd67a98ed1cac1ffcf9352be4a87c3e9
Signed-off-by: Keith Hui <buurin@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38352
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/intel/i82371eb/chip.h | 3 | ||||
| -rw-r--r-- | src/southbridge/intel/i82371eb/isa.c | 7 |
2 files changed, 9 insertions, 1 deletions
diff --git a/src/southbridge/intel/i82371eb/chip.h b/src/southbridge/intel/i82371eb/chip.h index 28975a2bbb..986208208e 100644 --- a/src/southbridge/intel/i82371eb/chip.h +++ b/src/southbridge/intel/i82371eb/chip.h @@ -28,6 +28,9 @@ struct southbridge_intel_i82371eb_config { int ide1_drive1_udma33_enable:1; int ide_legacy_enable:1; int usb_enable:1; + int gpo22_enable:1; /* GPO22/GPO23 (1) vs. XDIR#/XOE# (0) */ + int gpo22:1; + int gpo23:1; /* acpi */ u32 gpo; /* gpio output default */ u8 lid_polarity; diff --git a/src/southbridge/intel/i82371eb/isa.c b/src/southbridge/intel/i82371eb/isa.c index bb88f7ddc0..a57d61ae03 100644 --- a/src/southbridge/intel/i82371eb/isa.c +++ b/src/southbridge/intel/i82371eb/isa.c @@ -28,6 +28,7 @@ #include <arch/acpigen.h> #endif #include "i82371eb.h" +#include "chip.h" #if CONFIG(IOAPIC) static void enable_intel_82093aa_ioapic(void) @@ -63,6 +64,7 @@ static void enable_intel_82093aa_ioapic(void) static void isa_init(struct device *dev) { u32 reg32; + struct southbridge_intel_i82371eb_config *sb = dev->chip_info; /* Initialize the real time clock (RTC). */ cmos_init(0); @@ -80,7 +82,10 @@ static void isa_init(struct device *dev) */ reg32 = pci_read_config32(dev, GENCFG); reg32 |= ISA; /* Select ISA, not EIO. */ - pci_write_config16(dev, GENCFG, reg32); + + /* Some boards use GPO22/23. Select it if configured. */ + reg32 = ONOFF(sb->gpo22_enable, reg32, GPO2223); + pci_write_config32(dev, GENCFG, reg32); /* Initialize ISA DMA. */ isa_dma_init(); |