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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <arch/io.h>
#include <reset.h>
#include <soc/northbridge.h>
#include <soc/pci_devs.h>
#include <device/pci_ops.h>
#include <soc/southbridge.h>
#include <amdblocks/acpimmio.h>
#include <amdblocks/reset.h>
#include <fsp/util.h>
#include <assert.h>
void set_warm_reset_flag(void)
{
uint8_t ncp = inw(NCP_ERR);
outb(NCP_ERR, ncp | NCP_WARM_BOOT);
}
int is_warm_reset(void)
{
return !!(inb(NCP_ERR) & NCP_WARM_BOOT);
}
void do_cold_reset(void)
{
/* De-assert and then assert all PwrGood signals on CF9 reset. */
pm_write16(PWR_RESET_CFG, pm_read16(PWR_RESET_CFG) |
TOGGLE_ALL_PWR_GOOD);
outb(RST_CMD | SYS_RST, SYS_RESET);
}
void do_warm_reset(void)
{
set_warm_reset_flag();
/* Assert reset signals only. */
outb(RST_CMD | SYS_RST, SYS_RESET);
}
void do_board_reset(void)
{
/* TODO: Would a warm_reset() suffice? */
do_cold_reset();
}
void chipset_handle_reset(uint32_t status)
{
printk(BIOS_ERR, "Error: unexpected call to %s(0x%08x). Doing cold reset.\n",
__func__, status);
assert(0);
do_cold_reset();
}
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