| Stefan Roese | 50b5ac0 | 2012-08-16 17:53:18 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2012 Stefan Roese <sr@denx.de> |
| 3 | * |
| 4 | * See file CREDITS for list of people who contributed to this |
| 5 | * project. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 of |
| 10 | * the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | */ |
| 17 | |
| 18 | #include <common.h> |
| 19 | #include <spl.h> |
| 20 | |
| 21 | DECLARE_GLOBAL_DATA_PTR; |
| 22 | |
| 23 | /* |
| 24 | * Needed to align size SPL image to a 4-byte length |
| 25 | */ |
| 26 | u32 end_align __attribute__ ((section(".end_align"))); |
| 27 | |
| 28 | /* |
| 29 | * Return selected boot device. On MPC5200 its only NOR flash right now. |
| 30 | */ |
| 31 | u32 spl_boot_device(void) |
| 32 | { |
| 33 | return BOOT_DEVICE_NOR; |
| 34 | } |
| 35 | |
| 36 | /* |
| 37 | * SPL version of board_init_f() |
| 38 | */ |
| 39 | void board_init_f(ulong bootflag) |
| 40 | { |
| 41 | end_align = (u32)__spl_flash_end; |
| 42 | |
| 43 | /* |
| 44 | * First we need to initialize the SDRAM, so that the real |
| 45 | * U-Boot or the OS (Linux) can be loaded |
| 46 | */ |
| 47 | initdram(0); |
| 48 | |
| 49 | /* Clear bss */ |
| 50 | memset(__bss_start, '\0', __bss_end__ - __bss_start); |
| 51 | |
| 52 | /* |
| 53 | * Init global_data pointer. Has to be done before calling |
| 54 | * get_clocks(), as it stores some clock values into gd needed |
| 55 | * later on in the serial driver. |
| 56 | */ |
| 57 | /* Pointer is writable since we allocated a register for it */ |
| 58 | gd = (gd_t *)(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET); |
| 59 | /* Clear initial global data */ |
| 60 | memset((void *)gd, 0, sizeof(gd_t)); |
| 61 | |
| 62 | /* |
| 63 | * get_clocks() needs to be called so that the serial driver |
| 64 | * works correctly |
| 65 | */ |
| 66 | get_clocks(); |
| 67 | |
| 68 | /* |
| 69 | * Do rudimental console / serial setup |
| 70 | */ |
| 71 | preloader_console_init(); |
| 72 | |
| 73 | /* |
| 74 | * Call board_init_r() (SPL framework version) to load and boot |
| 75 | * real U-Boot or OS |
| 76 | */ |
| 77 | board_init_r(NULL, 0); |
| 78 | /* Does not return!!! */ |
| 79 | } |