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| author | David Hendricks <dhendrix@chromium.org> | 2014-04-13 16:27:02 -0700 |
|---|---|---|
| committer | Marc Jones <marc.jones@se-eng.com> | 2014-12-17 20:50:33 +0100 |
| commit | f2612a10610e7a890badb4588c0ceb2d92ff9281 (patch) | |
| tree | 41d8bb0c5d4c3f83330db73549fd6114a70cc44c /src/southbridge | |
| parent | 229ad270f67af53c62b1ef6fe74bc48ef3d1ec58 (diff) | |
| download | coreboot-f2612a10610e7a890badb4588c0ceb2d92ff9281.tar.xz | |
x86: Initialize SPI controller explicitly during PCH init
This ensures that SPI is ready when eventlog code is used.
x86 platforms which use eventlog invoke elog_clear() in GSMI and
elog_add_event_raw() when deciding the boot path based on ME status.
For the SMM case spi_init() is called during the finalize stage in
SMM setup. For the boot path case we can call spi_init() at the
beginning of BS_DEV_INIT and it will be ready to use when the boot
path is determined from the ME status.
BUG=none
BRANCH=none
TEST=tested on Link (bd82x6x), Beltino (Lynxpoint), and Rambi
(Baytrail) with follow-up patch
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Change-Id: Id3aef0fc7d4df5aaa3c1c2c2383b339430e7a6a1
Original-Reviewed-on: https://chromium-review.googlesource.com/194525
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
Original-Commit-Queue: David Hendricks <dhendrix@chromium.org>
Original-Tested-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit 173d8f08e867bab8c97a6c733580917f5892a45d)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: Ifaed677bbb141377b36bd9910b2b1c3402654aad
Reviewed-on: http://review.coreboot.org/7756
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/intel/common/spi.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/southbridge/intel/common/spi.c b/src/southbridge/intel/common/spi.c index 48c72b7737..3f22bc736f 100644 --- a/src/southbridge/intel/common/spi.c +++ b/src/southbridge/intel/common/spi.c @@ -26,6 +26,7 @@ #include <stdint.h> #include <stdlib.h> #include <string.h> +#include <bootstate.h> #include <delay.h> #include <arch/io.h> #include <console/console.h> @@ -359,6 +360,14 @@ void spi_init(void) bios_cntl &= ~(1 << 5); pci_write_config_byte(dev, 0xdc, bios_cntl | 0x1); } +static void spi_init_cb(void *unused) +{ + spi_init(); +} + +BOOT_STATE_INIT_ENTRIES(spi_init_bscb) = { + BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, spi_init_cb, NULL), +}; int spi_claim_bus(struct spi_slave *slave) { |