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/* SPDX-License-Identifier: GPL-2.0-only */
#include <amdblocks/acpimmio.h>
#include <amdblocks/espi.h>
#include <bootblock_common.h>
#include <baseboard/variants.h>
#include <console/console.h>
#include <delay.h>
#include <device/pci_ops.h>
#include <soc/pci_devs.h>
#include <timer.h>
#define FC350_PCIE_INIT_DELAY_US (20 * USECS_PER_MSEC)
struct stopwatch pcie_init_timeout_sw;
void mb_set_up_early_espi(void)
{
/*
* We don't need to initialize all of the GPIOs that are done
* in bootblock_mainboard_early_init(), but we need to release
* the EC eSPI reset and do the rest of the configuration.
*
* This will not be present in the normal boot flow.
*/
bootblock_mainboard_early_init();
}
void bootblock_mainboard_early_init(void)
{
uint32_t dword;
size_t base_num_gpios, override_num_gpios;
const struct soc_amd_gpio *base_gpios, *override_gpios;
if (!CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK)) {
base_gpios = variant_early_gpio_table(&base_num_gpios);
override_gpios = variant_early_override_gpio_table(&override_num_gpios);
gpio_configure_pads_with_override(base_gpios, base_num_gpios,
override_gpios, override_num_gpios);
/* Set a timer to make sure there's enough delay for
* the Fibocom 350 PCIe init
*/
stopwatch_init_usecs_expire(&pcie_init_timeout_sw, FC350_PCIE_INIT_DELAY_US);
}
printk(BIOS_DEBUG, "Bootblock configure eSPI\n");
dword = pci_read_config32(SOC_LPC_DEV, 0x78);
dword &= 0xFFFFF9F3;
dword |= 0x200;
pci_write_config32(SOC_LPC_DEV, 0x78, dword);
pci_write_config32(SOC_LPC_DEV, 0x44, 0);
pci_write_config32(SOC_LPC_DEV, 0x48, 0);
dword = pm_read32(0x90);
dword |= 1 << 16;
pm_write32(0x90, dword);
dword = pm_read32(0x74);
dword |= 3 << 10;
pm_write32(0x74, dword);
}
void bootblock_mainboard_init(void)
{
size_t base_num_gpios, override_num_gpios;
const struct soc_amd_gpio *base_gpios, *override_gpios;
int i = 0;
/* Make sure that at least 20ms has elapsed since enabling WWAN power
* in bootblock_mainboard_early_init.
* This is only applicable if verstage is not in the PSP and the board
* is using the fibocom 350 WLAN card, so this typically will not be hit.
*/
if (!CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK) && variant_has_pcie_wwan()) {
while (!stopwatch_expired(&pcie_init_timeout_sw)) {
mdelay(1);
i++;
};
if (i)
printk(BIOS_DEBUG, "Delayed %d ms for PCIe\n", i);
}
base_gpios = variant_bootblock_gpio_table(&base_num_gpios);
override_gpios = variant_bootblock_override_gpio_table(&override_num_gpios);
gpio_configure_pads_with_override(base_gpios, base_num_gpios, override_gpios,
override_num_gpios);
/* FPMCU check needs to happen after EC initialization for FW_CONFIG bits */
if (variant_has_fpmcu())
variant_fpmcu_reset();
}
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