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authorNico Huber <nico.h@gmx.de>2018-01-14 12:34:43 +0100
committerMartin Roth <martinroth@google.com>2018-01-23 05:25:41 +0000
commitff4025c5f789b80e6552dd887c34c34642a98c64 (patch)
tree852784fb6548c414d41dbdc93f4de6b5b191f9a6 /src/southbridge
parent101485c73dbb7eb8d89fbfda1c1bf9a5e495b536 (diff)
downloadcoreboot-ff4025c5f789b80e6552dd887c34c34642a98c64.tar.xz
sb/intel/bd82x6x: Reduce function-disable mess
Most affected boards set the function disabled (FD) register to an arbitrary state dumped from systems running the vendor BIOS. This makes it impossible to enable the devices in devicetree and a pretty big mess of course because nobody cared to keep the register in sync with the devicetree. To get completely rid of most of the writes to FD, move setting of PCH_DISABLE_ALWAYS into the southbridge code where it belongs. Change-Id: Ia2a507cbcdf218d09738e2e16f0d3ad1dcf57b8b Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/23255 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Hal Martin <hal.martin+coreboot@gmail.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Bill XIE <persmule@gmail.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/southbridge')
-rw-r--r--src/southbridge/intel/bd82x6x/early_rcba.c6
-rw-r--r--src/southbridge/intel/bd82x6x/pch.h2
2 files changed, 8 insertions, 0 deletions
diff --git a/src/southbridge/intel/bd82x6x/early_rcba.c b/src/southbridge/intel/bd82x6x/early_rcba.c
index eeecb5fdbe..9bd3a26e22 100644
--- a/src/southbridge/intel/bd82x6x/early_rcba.c
+++ b/src/southbridge/intel/bd82x6x/early_rcba.c
@@ -63,3 +63,9 @@ southbridge_configure_default_intmap(void)
/* PCH BWG says to read back the IOAPIC enable register */
(void) RCBA16(OIC);
}
+
+void
+southbridge_rcba_config(void)
+{
+ RCBA32(FD) = PCH_DISABLE_ALWAYS;
+}
diff --git a/src/southbridge/intel/bd82x6x/pch.h b/src/southbridge/intel/bd82x6x/pch.h
index 83d9d8d1dd..b094826336 100644
--- a/src/southbridge/intel/bd82x6x/pch.h
+++ b/src/southbridge/intel/bd82x6x/pch.h
@@ -85,6 +85,8 @@ int smbus_read_byte(unsigned device, unsigned address);
int early_spi_read(u32 offset, u32 size, u8 *buffer);
void early_thermal_init(void);
void southbridge_configure_default_intmap(void);
+void southbridge_rcba_config(void);
+void mainboard_rcba_config(void);
void early_pch_init_native(void);
int southbridge_detect_s3_resume(void);