| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <arch/io.h> |
| #include <reset.h> |
| #include <soc/pci_devs.h> |
| #include <soc/reset.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); |
| BUG(); |
| do_cold_reset(); |
| } |