135 lines
2.6 KiB
C
135 lines
2.6 KiB
C
/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* (C) Copyright 2008
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* Graeme Russ, graeme.russ@gmail.com.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/u-boot-x86.h>
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#include <flash.h>
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#include <netdev.h>
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#include <ns16550.h>
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#include <asm/msr.h>
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#include <asm/cache.h>
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#include <asm/io.h>
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#include <asm/arch-coreboot/tables.h>
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#include <asm/arch-coreboot/sysinfo.h>
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#include <asm/arch/timestamp.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* Miscellaneous platform dependent initializations
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*/
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int cpu_init_f(void)
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{
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int ret = get_coreboot_info(&lib_sysinfo);
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if (ret != 0)
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printf("Failed to parse coreboot tables.\n");
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timestamp_init();
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return ret;
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}
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int board_early_init_f(void)
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{
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return 0;
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}
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int board_early_init_r(void)
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{
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/* CPU Speed to 100MHz */
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gd->cpu_clk = 100000000;
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/* Crystal is 33.000MHz */
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gd->bus_clk = 33000000;
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return 0;
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}
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void show_boot_progress(int val)
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{
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#if MIN_PORT80_KCLOCKS_DELAY
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/*
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* Scale the time counter reading to avoid using 64 bit arithmetics.
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* Can't use get_timer() here becuase it could be not yet
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* initialized or even implemented.
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*/
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if (!gd->arch.tsc_prev) {
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gd->arch.tsc_base_kclocks = rdtsc() / 1000;
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gd->arch.tsc_prev = 0;
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} else {
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uint32_t now;
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do {
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now = rdtsc() / 1000 - gd->arch.tsc_base_kclocks;
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} while (now < (gd->arch.tsc_prev + MIN_PORT80_KCLOCKS_DELAY));
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gd->arch.tsc_prev = now;
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}
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#endif
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outb(val, 0x80);
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}
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int last_stage_init(void)
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{
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if (gd->flags & GD_FLG_COLD_BOOT)
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timestamp_add_to_bootstage();
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return 0;
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}
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#ifndef CONFIG_SYS_NO_FLASH
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ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
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{
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return 0;
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}
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#endif
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int board_eth_init(bd_t *bis)
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{
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return pci_eth_init(bis);
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}
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#define MTRR_TYPE_WP 5
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#define MTRRcap_MSR 0xfe
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#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
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#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
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int board_final_cleanup(void)
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{
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/* Un-cache the ROM so the kernel has one
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* more MTRR available.
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*
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* Coreboot should have assigned this to the
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* top available variable MTRR.
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*/
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u8 top_mtrr = (native_read_msr(MTRRcap_MSR) & 0xff) - 1;
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u8 top_type = native_read_msr(MTRRphysBase_MSR(top_mtrr)) & 0xff;
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/* Make sure this MTRR is the correct Write-Protected type */
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if (top_type == MTRR_TYPE_WP) {
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disable_caches();
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wrmsrl(MTRRphysBase_MSR(top_mtrr), 0);
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wrmsrl(MTRRphysMask_MSR(top_mtrr), 0);
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enable_caches();
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}
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/* Issue SMI to Coreboot to lock down ME and registers */
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printf("Finalizing Coreboot\n");
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outb(0xcb, 0xb2);
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return 0;
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}
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void panic_puts(const char *str)
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{
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NS16550_t port = (NS16550_t)0x3f8;
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NS16550_init(port, 1);
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while (*str)
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NS16550_putc(port, *str++);
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}
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