2 * Copyright (c) 2011 The Chromium OS Authors.
4 * Graeme Russ, graeme.russ@gmail.com.
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 #include <asm/u-boot-x86.h>
30 #include <asm/cache.h>
32 #include <asm/arch-coreboot/tables.h>
33 #include <asm/arch-coreboot/sysinfo.h>
34 #include <asm/arch/timestamp.h>
36 DECLARE_GLOBAL_DATA_PTR;
39 * Miscellaneous platform dependent initializations
43 int ret = get_coreboot_info(&lib_sysinfo);
45 printf("Failed to parse coreboot tables.\n");
52 int board_early_init_f(void)
57 int board_early_init_r(void)
59 /* CPU Speed to 100MHz */
60 gd->cpu_clk = 100000000;
62 /* Crystal is 33.000MHz */
63 gd->bus_clk = 33000000;
68 void show_boot_progress(int val)
70 #if MIN_PORT80_KCLOCKS_DELAY
71 static uint32_t prev_stamp;
75 * Scale the time counter reading to avoid using 64 bit arithmetics.
76 * Can't use get_timer() here becuase it could be not yet
77 * initialized or even implemented.
80 base = rdtsc() / 1000;
86 now = rdtsc() / 1000 - base;
87 } while (now < (prev_stamp + MIN_PORT80_KCLOCKS_DELAY));
94 int last_stage_init(void)
99 #ifndef CONFIG_SYS_NO_FLASH
100 ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
106 int board_eth_init(bd_t *bis)
108 return pci_eth_init(bis);
111 #define MTRR_TYPE_WP 5
112 #define MTRRcap_MSR 0xfe
113 #define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
114 #define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
116 int board_final_cleanup(void)
118 /* Un-cache the ROM so the kernel has one
119 * more MTRR available.
121 * Coreboot should have assigned this to the
122 * top available variable MTRR.
124 u8 top_mtrr = (native_read_msr(MTRRcap_MSR) & 0xff) - 1;
125 u8 top_type = native_read_msr(MTRRphysBase_MSR(top_mtrr)) & 0xff;
127 /* Make sure this MTRR is the correct Write-Protected type */
128 if (top_type == MTRR_TYPE_WP) {
130 wrmsrl(MTRRphysBase_MSR(top_mtrr), 0);
131 wrmsrl(MTRRphysMask_MSR(top_mtrr), 0);
135 /* Issue SMI to Coreboot to lock down ME and registers */
136 printf("Finalizing Coreboot\n");