| Jason Liu | 83aa8fe | 2011-11-25 00:18:01 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2007 |
| 3 | * Sascha Hauer, Pengutronix |
| 4 | * |
| 5 | * (C) Copyright 2009 Freescale Semiconductor, Inc. |
| 6 | * |
| 7 | * See file CREDITS for list of people who contributed to this |
| 8 | * project. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License as |
| 12 | * published by the Free Software Foundation; either version 2 of |
| 13 | * the License, or (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 23 | * MA 02111-1307 USA |
| 24 | */ |
| 25 | |
| 26 | #include <common.h> |
| 27 | #include <asm/errno.h> |
| 28 | #include <asm/io.h> |
| 29 | #include <asm/arch/imx-regs.h> |
| 30 | #include <asm/arch/clock.h> |
| 31 | #include <asm/arch/sys_proto.h> |
| 32 | |
| 33 | #ifdef CONFIG_FSL_ESDHC |
| 34 | #include <fsl_esdhc.h> |
| 35 | #endif |
| 36 | |
| 37 | static char *get_reset_cause(void) |
| 38 | { |
| 39 | u32 cause; |
| 40 | struct src *src_regs = (struct src *)SRC_BASE_ADDR; |
| 41 | |
| 42 | cause = readl(&src_regs->srsr); |
| 43 | writel(cause, &src_regs->srsr); |
| 44 | |
| 45 | switch (cause) { |
| 46 | case 0x00001: |
| 47 | return "POR"; |
| 48 | case 0x00004: |
| 49 | return "CSU"; |
| 50 | case 0x00008: |
| 51 | return "IPP USER"; |
| 52 | case 0x00010: |
| 53 | return "WDOG"; |
| 54 | case 0x00020: |
| 55 | return "JTAG HIGH-Z"; |
| 56 | case 0x00040: |
| 57 | return "JTAG SW"; |
| 58 | case 0x10000: |
| 59 | return "WARM BOOT"; |
| 60 | default: |
| 61 | return "unknown reset"; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | #if defined(CONFIG_DISPLAY_CPUINFO) |
| 66 | int print_cpuinfo(void) |
| 67 | { |
| 68 | u32 cpurev; |
| 69 | |
| 70 | cpurev = get_cpu_rev(); |
| 71 | printf("CPU: Freescale i.MX%x family rev%d.%d at %d MHz\n", |
| 72 | (cpurev & 0xFF000) >> 12, |
| 73 | (cpurev & 0x000F0) >> 4, |
| 74 | (cpurev & 0x0000F) >> 0, |
| 75 | mxc_get_clock(MXC_ARM_CLK) / 1000000); |
| 76 | printf("Reset cause: %s\n", get_reset_cause()); |
| 77 | return 0; |
| 78 | } |
| 79 | #endif |
| 80 | |
| 81 | int cpu_eth_init(bd_t *bis) |
| 82 | { |
| 83 | int rc = -ENODEV; |
| 84 | |
| 85 | #if defined(CONFIG_FEC_MXC) |
| 86 | rc = fecmxc_initialize(bis); |
| 87 | #endif |
| 88 | |
| 89 | return rc; |
| 90 | } |
| 91 | |
| 92 | /* |
| 93 | * Initializes on-chip MMC controllers. |
| 94 | * to override, implement board_mmc_init() |
| 95 | */ |
| 96 | int cpu_mmc_init(bd_t *bis) |
| 97 | { |
| 98 | #ifdef CONFIG_FSL_ESDHC |
| 99 | return fsl_esdhc_mmc_init(bis); |
| 100 | #else |
| 101 | return 0; |
| 102 | #endif |
| 103 | } |
| 104 | |
| 105 | void reset_cpu(ulong addr) |
| 106 | { |
| 107 | __raw_writew(4, WDOG1_BASE_ADDR); |
| 108 | } |