diff options
Diffstat (limited to 'src/soc/intel/apollolake/cse.c')
| -rw-r--r-- | src/soc/intel/apollolake/cse.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/cse.c b/src/soc/intel/apollolake/cse.c new file mode 100644 index 0000000000..b8ab1f0a1a --- /dev/null +++ b/src/soc/intel/apollolake/cse.c @@ -0,0 +1,57 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2017 Google, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/io.h> +#include <bootstate.h> +#include <console/console.h> +#include <soc/pci_devs.h> +#include <stdint.h> + +#define PCI_ME_HFSTS1 0x40 +#define PCI_ME_HFSTS2 0x48 +#define PCI_ME_HFSTS3 0x60 +#define PCI_ME_HFSTS4 0x64 +#define PCI_ME_HFSTS5 0x68 +#define PCI_ME_HFSTS6 0x6c + +static uint32_t dump_status(int index, int reg_addr) +{ + uint32_t reg = pci_read_config32(CSE_DEV, reg_addr); + + printk(BIOS_DEBUG, "CSE FWSTS%d: 0x%08x\n", index, reg); + + return reg; +} + +static void dump_cse_state(void *unused) +{ + uint32_t fwsts1; + + fwsts1 = dump_status(1, PCI_ME_HFSTS1); + dump_status(2, PCI_ME_HFSTS2); + dump_status(3, PCI_ME_HFSTS3); + dump_status(4, PCI_ME_HFSTS4); + dump_status(5, PCI_ME_HFSTS5); + dump_status(6, PCI_ME_HFSTS6); + + /* Minimal decoding is done here in order to call out most important + pieces. Manufacturing mode needs to be locked down prior to shipping + the product so it's called out explicitly. */ + printk(BIOS_DEBUG, "ME: Manufacturing Mode : %s\n", + (fwsts1 & (1 << 0x4)) ? "YES" : "NO"); +} + +BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, dump_cse_state, NULL); +BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, dump_cse_state, NULL); |