| /* |
| * Copyright (C) 2012 Stefan Roese <sr@denx.de> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <spl.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| /* |
| * Needed to align size SPL image to a 4-byte length |
| */ |
| u32 end_align __attribute__ ((section(".end_align"))); |
| |
| /* |
| * Return selected boot device. On MPC5200 its only NOR flash right now. |
| */ |
| u32 spl_boot_device(void) |
| { |
| return BOOT_DEVICE_NOR; |
| } |
| |
| /* |
| * SPL version of board_init_f() |
| */ |
| void board_init_f(ulong bootflag) |
| { |
| end_align = (u32)__spl_flash_end; |
| |
| /* |
| * On MPC5200, the initial RAM (and gd) is located in the internal |
| * SRAM. So we can actually call the preloader console init code |
| * before calling initdram(). This makes serial output (printf) |
| * available very early, even before SDRAM init, which has been |
| * an U-Boot priciple from day 1. |
| */ |
| |
| /* |
| * Init global_data pointer. Has to be done before calling |
| * get_clocks(), as it stores some clock values into gd needed |
| * later on in the serial driver. |
| */ |
| /* Pointer is writable since we allocated a register for it */ |
| gd = (gd_t *)(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET); |
| /* Clear initial global data */ |
| memset((void *)gd, 0, sizeof(gd_t)); |
| |
| /* |
| * get_clocks() needs to be called so that the serial driver |
| * works correctly |
| */ |
| get_clocks(); |
| |
| /* |
| * Do rudimental console / serial setup |
| */ |
| preloader_console_init(); |
| |
| /* |
| * First we need to initialize the SDRAM, so that the real |
| * U-Boot or the OS (Linux) can be loaded |
| */ |
| initdram(0); |
| |
| /* Clear bss */ |
| memset(__bss_start, '\0', __bss_end - __bss_start); |
| |
| /* |
| * Call board_init_r() (SPL framework version) to load and boot |
| * real U-Boot or OS |
| */ |
| board_init_r(NULL, 0); |
| /* Does not return!!! */ |
| } |