diff options
Diffstat (limited to 'src/soc/intel/skylake/pcr.c')
| -rw-r--r-- | src/soc/intel/skylake/pcr.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/src/soc/intel/skylake/pcr.c b/src/soc/intel/skylake/pcr.c deleted file mode 100644 index 0b92d769d0..0000000000 --- a/src/soc/intel/skylake/pcr.c +++ /dev/null @@ -1,187 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2015 Intel Corporation. - * - * 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 <stdint.h> -#include <string.h> -#include <arch/io.h> -#include <device/device.h> -#include <device/pci.h> -#include <soc/pcr.h> -#include <soc/iomap.h> -#include <console/console.h> - -static inline void *pcr_reg_address(u8 pid, u16 offset) -{ - uintptr_t reg_addr; - - /* Create an address based off of port id and offset. */ - reg_addr = PCH_PCR_BASE_ADDRESS; - reg_addr += ((uintptr_t)pid) << PCR_PORTID_SHIFT; - reg_addr += ((uintptr_t)offset) << PCR_OFFSET_SHIFT; - - return (void *)reg_addr; -} - -uint8_t *pcr_port_regs(u8 pid) -{ - return pcr_reg_address(pid, 0); -} - -/* - * Read PCR register. (This is internal function) - * It returns PCR register and size in 1/2/4 bytes. - * The offset should not exceed 0xFFFF and must be aligned with size - */ -static int pch_pcr_read(u8 pid, u16 offset, u32 size, void *data) -{ - if ((offset & (size - 1)) != 0) { - printk(BIOS_DEBUG, - "PchPcrRead error. Invalid Offset: %x Size: %x", - offset, size); - return -1; - } - switch (size) { - case 4: - *(u32 *) data = read32(pcr_reg_address(pid, offset)); - break; - case 2: - *(u16 *) data = read16(pcr_reg_address(pid, offset)); - break; - case 1: - *(u8 *) data = read8(pcr_reg_address(pid, offset)); - break; - default: - return -1; - } - return 0; -} - -int pcr_read32(u8 pid, u16 offset, u32 *outdata) -{ - return pch_pcr_read(pid, offset, sizeof(u32), (u32 *)outdata); -} - -int pcr_read16(u8 pid, u16 offset, u16 *outdata) -{ - return pch_pcr_read(pid, offset, sizeof(u16), (u32 *)outdata); -} - -int pcr_read8(u8 pid, u16 offset, u8 *outdata) -{ - return pch_pcr_read(pid, offset, sizeof(u8), (u32 *)outdata); -} - -/* - * After every write one needs to perform a read an innocuous register to - * ensure the writes are completed for certain ports. This is done for - * all ports so that the callers don't need the per-port knowledge for - * each transaction. - */ -static inline void complete_write(void) -{ - /* Read the general control and function disable register. */ - const size_t R_PCH_PCR_LPC_GCFD = 0x3418; - read32(pcr_reg_address(PID_LPC, R_PCH_PCR_LPC_GCFD)); -} - -/* - * Write PCR register. (This is internal function) - * It returns PCR register and size in 1/2/4 bytes. - * The offset should not exceed 0xFFFF and must be aligned with size - */ -static int pch_pcr_write(u8 pid, u16 offset, u32 size, u32 data) -{ - if ((offset & (size - 1)) != 0) { - printk(BIOS_DEBUG, - "PchPcrWrite error. Invalid Offset: %x Size: %x", - offset, size); - return -1; - } - /* Write the PCR register with provided data - * Then read back PCR register to prevent from back to back write. - */ - switch (size) { - case 4: - write32(pcr_reg_address(pid, offset), (u32) data); - break; - case 2: - write16(pcr_reg_address(pid, offset), (u16) data); - break; - case 1: - write8(pcr_reg_address(pid, offset), (u8) data); - break; - default: - return -1; - } - /* Ensure the writes complete. */ - complete_write(); - - return 0; -} - -int pcr_write32(u8 pid, u16 offset, u32 indata) -{ - return pch_pcr_write(pid, offset, sizeof(u32), indata); -} - -int pcr_write16(u8 pid, u16 offset, u16 indata) -{ - return pch_pcr_write(pid, offset, sizeof(u16), indata); -} - -int pcr_write8(u8 pid, u16 offset, u8 indata) -{ - return pch_pcr_write(pid, offset, sizeof(u8), indata); -} - -/* - * Write PCR register. (This is internal function) - * It programs PCR register and size in 1/2/4 bytes. - * The offset should not exceed 0xFFFF and must be aligned with size - * - * u8 defines as 8 bit Port ID that will be used when sending - * transaction to sideband. - */ -static int pcr_and_then_or(u8 pid, u16 offset, u32 size, u32 anddata, - u32 ordata) -{ - u8 status; - u32 data32 = 0; - - status = pch_pcr_read(pid, offset, size, &data32); - if (status != 0) - return -1; - - data32 &= anddata; - data32 |= ordata; - - status = pch_pcr_write(pid, offset, size, data32); - return status; -} - -int pcr_andthenor32(u8 pid, u16 offset, u32 anddata, u32 ordata) -{ - return pcr_and_then_or(pid, offset, sizeof(u32), anddata, ordata); -} - -int pcr_andthenor16(u8 pid, u16 offset, u16 anddata, u16 ordata) -{ - return pcr_and_then_or(pid, offset, sizeof(u16), anddata, ordata); -} - -int pcr_andthenor8(u8 pid, u16 offset, u8 anddata, u8 ordata) -{ - return pcr_and_then_or(pid, offset, sizeof(u8), anddata, ordata); -} |