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authorAngel Pons <th3fanbus@gmail.com>2022-01-08 13:16:38 +0100
committerFelix Held <felix-coreboot@felixheld.de>2022-01-11 14:04:33 +0000
commit5e7f90bb4c24ad9c500de153df3b2304f569f6e9 (patch)
tree984f5cc644af96a65d570f9a0f14ec5a890c074f /src/mainboard
parent29e33551a92368ae69063a8bff1cfd80904918c9 (diff)
soc/intel/alderlake: Factor out A0 stepping workaround
Move the `configure_pmc_descriptor()` function to SoC scope instead of having two identical copies in mainboard scope. Add a Kconfig option to allow mainboards to decide whether to implement this workaround. Change-Id: Ib99073d8da91a93fae9c0cebdfd73e39456cdaa8 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/60940 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Sheng Lean Tan <sheng.tan@9elements.com> Reviewed-by: Subrata Banik <subratabanik@google.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src/mainboard')
-rw-r--r--src/mainboard/google/brya/Kconfig1
-rw-r--r--src/mainboard/google/brya/bootblock.c87
-rw-r--r--src/mainboard/intel/adlrvp/Kconfig1
-rw-r--r--src/mainboard/intel/adlrvp/bootblock.c86
4 files changed, 2 insertions, 173 deletions
diff --git a/src/mainboard/google/brya/Kconfig b/src/mainboard/google/brya/Kconfig
index 158df8b51b..8b99e7bba1 100644
--- a/src/mainboard/google/brya/Kconfig
+++ b/src/mainboard/google/brya/Kconfig
@@ -1,5 +1,6 @@
config BOARD_GOOGLE_BRYA_COMMON
def_bool n
+ select ALDERLAKE_A0_CONFIGURE_PMC_DESCRIPTOR
select BOARD_ROMSIZE_KB_32768
select DRIVERS_GENERIC_ALC1015
select DRIVERS_GENERIC_GPIO_KEYS
diff --git a/src/mainboard/google/brya/bootblock.c b/src/mainboard/google/brya/bootblock.c
index bd7100a8dc..1815615f5e 100644
--- a/src/mainboard/google/brya/bootblock.c
+++ b/src/mainboard/google/brya/bootblock.c
@@ -1,88 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
-#include <arch/mmio.h>
#include <baseboard/variants.h>
#include <bootblock_common.h>
-#include <console/console.h>
-#include <fmap.h>
-#include <commonlib/region.h>
-#include <cpu/intel/cpu_ids.h>
-#include <intelblocks/pmclib.h>
-#include <cf9_reset.h>
-
-#define SI_DESC_REGION "SI_DESC"
-#define SI_DESC_REGION_SZ 4096
-#define PMC_DESC_7_BYTE3 0xc32
-
-/* Flash Master 1 : HOST/BIOS */
-#define FLMSTR1 0x80
-
-/* Flash signature Offset */
-#define FLASH_SIGN_OFFSET 0x10
-#define FLMSTR_WR_SHIFT_V2 20
-#define FLASH_VAL_SIGN 0xFF0A55A
-
-/* It checks whether host(Flash Master 1) has write access to the Descriptor Region or not */
-static int is_descriptor_writeable(uint8_t *desc)
-{
- /* Check flash has valid signature */
- if (read32((void *)(desc + FLASH_SIGN_OFFSET)) != FLASH_VAL_SIGN) {
- printk(BIOS_DEBUG, "Flash Descriptor is not valid\n");
- return 0;
- }
-
- /* Check host has write access to the Descriptor Region */
- if (!((read32((void *)(desc + FLMSTR1)) >> FLMSTR_WR_SHIFT_V2) & BIT(0))) {
- printk(BIOS_DEBUG, "Host doesn't have write access to Descriptor Region\n");
- return 0;
- }
-
- return 1;
-}
-
-/* It updates PMC Descriptor in the Descriptor Region */
-static void configure_pmc_descriptor(void)
-{
- uint8_t si_desc_buf[SI_DESC_REGION_SZ];
- struct region_device desc_rdev;
-
- if (fmap_locate_area_as_rdev_rw(SI_DESC_REGION, &desc_rdev) < 0) {
- printk(BIOS_ERR, "Failed to locate %s in the FMAP\n", SI_DESC_REGION);
- return;
- }
-
- if (rdev_readat(&desc_rdev, si_desc_buf, 0, SI_DESC_REGION_SZ) != SI_DESC_REGION_SZ) {
- printk(BIOS_ERR, "Failed to read Descriptor Region from SPI Flash\n");
- return;
- }
-
- if (!is_descriptor_writeable(si_desc_buf))
- return;
-
- if (si_desc_buf[PMC_DESC_7_BYTE3] != 0x40) {
- printk(BIOS_DEBUG, "Update of PMC Descriptor is not required!\n");
- return;
- }
-
- si_desc_buf[PMC_DESC_7_BYTE3] = 0x44;
-
- if (rdev_eraseat(&desc_rdev, 0, SI_DESC_REGION_SZ) != SI_DESC_REGION_SZ) {
- printk(BIOS_ERR, "Failed to erase Descriptor Region area\n");
- return;
- }
-
- if (rdev_writeat(&desc_rdev, si_desc_buf, 0, SI_DESC_REGION_SZ)
- != SI_DESC_REGION_SZ) {
- printk(BIOS_ERR, "Failed to update Descriptor Region\n");
- return;
- }
-
- printk(BIOS_DEBUG, "Update of PMC Descriptor successful, trigger GLOBAL RESET\n");
-
- pmc_global_reset_enable(true);
- do_full_reset();
- die("Failed to trigger GLOBAL RESET\n");
-}
void bootblock_mainboard_early_init(void)
{
@@ -91,9 +10,3 @@ void bootblock_mainboard_early_init(void)
pads = variant_early_gpio_table(&num);
gpio_configure_pads(pads, num);
}
-
-void bootblock_mainboard_init(void)
-{
- if (cpu_get_cpuid() == CPUID_ALDERLAKE_A0)
- configure_pmc_descriptor();
-}
diff --git a/src/mainboard/intel/adlrvp/Kconfig b/src/mainboard/intel/adlrvp/Kconfig
index cddea56538..e5f4ea4ef5 100644
--- a/src/mainboard/intel/adlrvp/Kconfig
+++ b/src/mainboard/intel/adlrvp/Kconfig
@@ -1,5 +1,6 @@
config BOARD_INTEL_ADLRVP_COMMON
def_bool n
+ select ALDERLAKE_A0_CONFIGURE_PMC_DESCRIPTOR
select BOARD_ROMSIZE_KB_32768
select DRIVERS_I2C_GENERIC
select DRIVERS_I2C_HID
diff --git a/src/mainboard/intel/adlrvp/bootblock.c b/src/mainboard/intel/adlrvp/bootblock.c
index 60dee1ab05..eeee406f12 100644
--- a/src/mainboard/intel/adlrvp/bootblock.c
+++ b/src/mainboard/intel/adlrvp/bootblock.c
@@ -1,95 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0-only */
-#include <arch/mmio.h>
#include <baseboard/variants.h>
#include <bootblock_common.h>
-#include <cf9_reset.h>
-#include <commonlib/region.h>
-#include <console/console.h>
-#include <cpu/intel/cpu_ids.h>
-#include <fmap.h>
-#include <intelblocks/pmclib.h>
-
-#define SI_DESC_REGION "SI_DESC"
-#define SI_DESC_REGION_SZ 4096
-#define PMC_DESC_7_BYTE3 0xc32
-
-/* Flash Master 1 : HOST/BIOS */
-#define FLMSTR1 0x80
-
-/* Flash signature Offset */
-#define FLASH_SIGN_OFFSET 0x10
-#define FLMSTR_WR_SHIFT_V2 20
-#define FLASH_VAL_SIGN 0xFF0A55A
-
-/* It checks whether host(Flash Master 1) has write access to the Descriptor Region or not */
-static int is_descriptor_writeable(uint8_t *desc)
-{
- /* Check flash has valid signature */
- if (read32((void *)(desc + FLASH_SIGN_OFFSET)) != FLASH_VAL_SIGN) {
- printk(BIOS_DEBUG, "Flash Descriptor is not valid\n");
- return 0;
- }
-
- /* Check host has write access to the Descriptor Region */
- if (!((read32((void *)(desc + FLMSTR1)) >> FLMSTR_WR_SHIFT_V2) & BIT(0))) {
- printk(BIOS_DEBUG, "Host doesn't have write access to Descriptor Region\n");
- return 0;
- }
-
- return 1;
-}
-
-/* It updates PMC Descriptor in the Descriptor Region */
-static void configure_pmc_descriptor(void)
-{
- uint8_t si_desc_buf[SI_DESC_REGION_SZ];
- struct region_device desc_rdev;
-
- if (fmap_locate_area_as_rdev_rw(SI_DESC_REGION, &desc_rdev) < 0) {
- printk(BIOS_ERR, "Failed to locate %s in the FMAP\n", SI_DESC_REGION);
- return;
- }
-
- if (rdev_readat(&desc_rdev, si_desc_buf, 0, SI_DESC_REGION_SZ) != SI_DESC_REGION_SZ) {
- printk(BIOS_ERR, "Failed to read Descriptor Region from SPI Flash\n");
- return;
- }
-
- if (!is_descriptor_writeable(si_desc_buf))
- return;
-
- if (si_desc_buf[PMC_DESC_7_BYTE3] != 0x40) {
- printk(BIOS_DEBUG, "Update of PMC Descriptor is not required!\n");
- return;
- }
-
- si_desc_buf[PMC_DESC_7_BYTE3] = 0x44;
-
- if (rdev_eraseat(&desc_rdev, 0, SI_DESC_REGION_SZ) != SI_DESC_REGION_SZ) {
- printk(BIOS_ERR, "Failed to erase Descriptor Region area\n");
- return;
- }
-
- if (rdev_writeat(&desc_rdev, si_desc_buf, 0, SI_DESC_REGION_SZ)
- != SI_DESC_REGION_SZ) {
- printk(BIOS_ERR, "Failed to update Descriptor Region\n");
- return;
- }
-
- printk(BIOS_DEBUG, "Update of PMC Descriptor successful, trigger GLOBAL RESET\n");
-
- pmc_global_reset_enable(true);
- do_full_reset();
- die("Failed to trigger GLOBAL RESET\n");
-}
void bootblock_mainboard_early_init(void)
{
variant_configure_early_gpio_pads();
}
-void bootblock_mainboard_init(void)
-{
- if (cpu_get_cpuid() == CPUID_ALDERLAKE_A0)
- configure_pmc_descriptor();
-}