| Tom Warren | 41b6838 | 2011-01-27 10:58:05 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2010,2011 |
| 3 | * NVIDIA Corporation <www.nvidia.com> |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | #include <asm/io.h> |
| 26 | #include <asm/arch/sys_proto.h> |
| 27 | #include <asm/arch/tegra2.h> |
| 28 | #include <asm/arch/pmc.h> |
| 29 | |
| 30 | DECLARE_GLOBAL_DATA_PTR; |
| 31 | |
| 32 | /* |
| 33 | * Boot ROM initializes the odmdata in APBDEV_PMC_SCRATCH20_0, |
| 34 | * so we are using this value to identify memory size. |
| 35 | */ |
| 36 | |
| 37 | unsigned int query_sdram_size(void) |
| 38 | { |
| 39 | struct pmc_ctlr *const pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE; |
| 40 | u32 reg; |
| 41 | |
| 42 | reg = readl(&pmc->pmc_scratch20); |
| 43 | debug("pmc->pmc_scratch20 (ODMData) = 0x%08lX\n", reg); |
| 44 | |
| 45 | /* bits 31:28 in OdmData are used for RAM size */ |
| 46 | switch ((reg) >> 28) { |
| 47 | case 1: |
| 48 | return 0x10000000; /* 256 MB */ |
| 49 | case 2: |
| 50 | return 0x20000000; /* 512 MB */ |
| 51 | case 3: |
| 52 | default: |
| 53 | return 0x40000000; /* 1GB */ |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | void s_init(void) |
| 58 | { |
| 59 | #ifndef CONFIG_ICACHE_OFF |
| 60 | icache_enable(); |
| 61 | #endif |
| 62 | invalidate_dcache(); |
| 63 | } |
| 64 | |
| 65 | int dram_init(void) |
| 66 | { |
| 67 | unsigned long rs; |
| 68 | |
| 69 | /* We do not initialise DRAM here. We just query the size */ |
| 70 | gd->bd->bi_dram[0].start = PHYS_SDRAM_1; |
| 71 | gd->bd->bi_dram[0].size = gd->ram_size = query_sdram_size(); |
| 72 | |
| 73 | /* Now check it dynamically */ |
| 74 | rs = get_ram_size(CONFIG_SYS_SDRAM_BASE, gd->ram_size); |
| 75 | if (rs) { |
| 76 | printf("dynamic ram_size = %lu\n", rs); |
| 77 | gd->bd->bi_dram[0].size = gd->ram_size = rs; |
| 78 | } |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | #ifdef CONFIG_DISPLAY_BOARDINFO |
| 83 | int checkboard(void) |
| 84 | { |
| 85 | printf("Board: %s\n", sysinfo.board_string); |
| 86 | return 0; |
| 87 | } |
| 88 | #endif /* CONFIG_DISPLAY_BOARDINFO */ |