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mb/scaleway/tagada: Don't change FIAMUX when Security Override is set 

This will not enable M.2 SATA drive if the ME config was lost
(For instance after flashing a full flash factory image)

This is required so that the system can boot without FIA MUX error
during flash update procedure.

Change-Id: I55a8bcdc30bc67af2d3e9ccb8844eac599727108
Signed-off-by: Julien Viard de Galbert <jviarddegalbert@online.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/25443
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Julien Viard de Galbert 2020-11-11 21:54:28 +01:00 committed by Patrick Georgi
parent 7e4ad26b95
commit b3e504c310
1 changed files with 35 additions and 1 deletions
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36
src/mainboard/scaleway/tagada/hsio.c
View File

@ -5,6 +5,8 @@
#include <hsio.h>
#include <gpio_defs.h>
#include <soc/fiamux.h>
#include <string.h>
#include <fast_spi_def.h>
#ifdef __RAMSTAGE__
static void update_hsio_info_for_m2_slots(size_t num_of_entry, BL_HSIO_INFORMATION *config)
@ -12,6 +14,14 @@ static void update_hsio_info_for_m2_slots(size_t num_of_entry, BL_HSIO_INFORMATI
uint32_t reg32;
bool m2a_pcie, m2b_pcie;
uint8_t entry;
BL_FIA_MUX_CONFIG_HOB *fiamux_hob_data = get_fiamux_hob_data();
uint16_t supported_hsio_lanes;
void *spibar = fast_spi_get_bar();
uint32_t hsfs;
/* Configure FIA MUX PCD */
supported_hsio_lanes =
(uint16_t)fiamux_hob_data->FiaMuxConfig.SkuNumLanesAllowed;
/* Detects modules type */
// _GPIO_4 : LFFF: M2A_CFGn : M2A_SATAn : 0 SATA, 1 PCIe
@ -29,7 +39,12 @@ static void update_hsio_info_for_m2_slots(size_t num_of_entry, BL_HSIO_INFORMATI
// HSIO default config is for PCIe, only update for SATA
// (also secondary PCIe lines are already set depending on SKU)
for (entry = 0; entry < num_of_entry; entry++) {
BL_ME_FIA_MUX_CONFIG *mux_config = &(config[entry].FiaConfig.MuxConfiguration);
/* only update the active config */
if (config[entry].NumLanesSupported != supported_hsio_lanes)
continue;
BL_ME_FIA_CONFIG *fia_config = &(config[entry].FiaConfig);
BL_ME_FIA_MUX_CONFIG *mux_config =
&(config[entry].FiaConfig.MuxConfiguration);
BL_ME_FIA_SATA_CONFIG *sata_config =
&(config[entry].FiaConfig.SataLaneConfiguration);
if (!m2a_pcie) {
@ -46,6 +61,25 @@ static void update_hsio_info_for_m2_slots(size_t num_of_entry, BL_HSIO_INFORMATI
sata_config->BL_MeFiaSataLaneSataSel.Lane12SataSel =
BL_ME_FIA_SATA_CONTROLLER_LANE_ASSIGNED;
}
/* Check SPIBAR for security override
at least one M2 slot is populated with SATA
the configuration is different form ME current one */
hsfs = read32(spibar + SPIBAR_HSFSTS_CTL);
if ((!(hsfs & SPIBAR_HSFSTS_FDOPSS))
&& (!m2a_pcie || !m2b_pcie)
&& memcmp(fia_config,
&fiamux_hob_data->FiaMuxConfig.FiaMuxConfig,
sizeof(BL_ME_FIA_CONFIG))) {
/* update configuration to NOT change ME config
as it will fail with security override set. */
memcpy(fia_config,
&fiamux_hob_data->FiaMuxConfig.FiaMuxConfig,
sizeof(BL_ME_FIA_CONFIG));
printk(BIOS_CRIT, "FLASH SECURITY OVERRIDE SET: "
"M2 SATA Slots are not available!\n");
}
}
}
#endif