| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <cf9_reset.h> |
| #include <console/console.h> |
| #include <fsp/util.h> |
| #include <intelblocks/pmclib.h> |
| #include <soc/intel/common/reset.h> |
| #include <soc/me.h> |
| #include <soc/pm.h> |
| |
| static void do_force_global_reset(void) |
| { |
| /* |
| * BIOS should ensure it does a global reset |
| * to reset both host and Intel ME by setting |
| * PCH PMC [B0:D31:F2 register offset 0xAC bit 20] |
| */ |
| pmc_global_reset_enable(true); |
| |
| /* Now BIOS can write 0x06 or 0x0E to 0xCF9 port |
| * to global reset platform */ |
| do_full_reset(); |
| } |
| |
| void do_global_reset(void) |
| { |
| if (!send_global_reset()) { |
| /* If ME unable to reset platform then |
| * force global reset using PMC CF9GR register*/ |
| do_force_global_reset(); |
| } |
| } |
| |
| void chipset_handle_reset(uint32_t status) |
| { |
| switch (status) { |
| case FSP_STATUS_RESET_REQUIRED_3: /* Global Reset */ |
| printk(BIOS_DEBUG, "GLOBAL RESET!!\n"); |
| global_reset(); |
| break; |
| default: |
| printk(BIOS_ERR, "unhandled reset type %x\n", status); |
| die("unknown reset type"); |
| break; |
| } |
| } |