mirror of
https://github.com/AsahiLinux/u-boot
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88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/*
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* (C) Copyright 2010,2011
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* NVIDIA Corporation <www.nvidia.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch/tegra2.h>
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#include <asm/arch/pmc.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* Boot ROM initializes the odmdata in APBDEV_PMC_SCRATCH20_0,
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* so we are using this value to identify memory size.
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*/
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unsigned int query_sdram_size(void)
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{
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struct pmc_ctlr *const pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
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u32 reg;
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reg = readl(&pmc->pmc_scratch20);
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debug("pmc->pmc_scratch20 (ODMData) = 0x%08lX\n", reg);
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/* bits 31:28 in OdmData are used for RAM size */
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switch ((reg) >> 28) {
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case 1:
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return 0x10000000; /* 256 MB */
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case 2:
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return 0x20000000; /* 512 MB */
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case 3:
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default:
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return 0x40000000; /* 1GB */
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}
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}
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void s_init(void)
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{
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#ifndef CONFIG_ICACHE_OFF
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icache_enable();
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#endif
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invalidate_dcache();
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}
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int dram_init(void)
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{
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unsigned long rs;
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/* We do not initialise DRAM here. We just query the size */
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gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
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gd->bd->bi_dram[0].size = gd->ram_size = query_sdram_size();
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/* Now check it dynamically */
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rs = get_ram_size(CONFIG_SYS_SDRAM_BASE, gd->ram_size);
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if (rs) {
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printf("dynamic ram_size = %lu\n", rs);
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gd->bd->bi_dram[0].size = gd->ram_size = rs;
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}
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return 0;
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}
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#ifdef CONFIG_DISPLAY_BOARDINFO
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int checkboard(void)
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{
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printf("Board: %s\n", sysinfo.board_string);
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return 0;
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}
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#endif /* CONFIG_DISPLAY_BOARDINFO */
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