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-rw-r--r--src/southbridge/intel/lynxpoint/pch.c25
-rw-r--r--src/southbridge/intel/lynxpoint/pch.h2
2 files changed, 21 insertions, 6 deletions
diff --git a/src/southbridge/intel/lynxpoint/pch.c b/src/southbridge/intel/lynxpoint/pch.c
index 58c68cdf05..05462c5e74 100644
--- a/src/southbridge/intel/lynxpoint/pch.c
+++ b/src/southbridge/intel/lynxpoint/pch.c
@@ -201,7 +201,7 @@ static inline int iobp_poll(void)
return 0;
}
-static u32 pch_iobp_read(u32 address)
+u32 pch_iobp_read(u32 address)
{
u16 status;
@@ -239,10 +239,15 @@ static u32 pch_iobp_read(u32 address)
return RCBA32(IOBPD);
}
-void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
+void pch_iobp_write(u32 address, u32 data)
{
u16 status;
- u32 data = pch_iobp_read(address);
+
+ if (!iobp_poll())
+ return;
+
+ /* Set the address */
+ RCBA32(IOBPIRI) = address;
/* WRITE OPCODE */
status = RCBA16(IOBPS);
@@ -250,9 +255,6 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
status |= IOBPS_WRITE;
RCBA16(IOBPS) = status;
- /* Update the data */
- data &= andvalue;
- data |= orvalue;
RCBA32(IOBPD) = data;
/* Undocumented magic */
@@ -276,6 +278,17 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
printk(BIOS_INFO, "IOBP: set 0x%08x to 0x%08x\n", address, data);
}
+void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
+{
+ u32 data = pch_iobp_read(address);
+
+ /* Update the data */
+ data &= andvalue;
+ data |= orvalue;
+
+ pch_iobp_write(address, data);
+}
+
/* Check if any port in set X to X+3 is enabled */
static int pch_pcie_check_set_enabled(device_t dev)
{
diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h
index 6ee81d1f4b..c46153ca44 100644
--- a/src/southbridge/intel/lynxpoint/pch.h
+++ b/src/southbridge/intel/lynxpoint/pch.h
@@ -162,6 +162,8 @@ void disable_gpe(u32 mask);
#include <arch/acpi.h>
#include "chip.h"
void pch_enable(device_t dev);
+u32 pch_iobp_read(u32 address);
+void pch_iobp_write(u32 address, u32 data);
void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
#if CONFIG_ELOG
void pch_log_state(void);