2 * Copyright (C) 2012 Stefan Roese <sr@denx.de>
4 * See file CREDITS for list of people who contributed to this
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.
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.
21 DECLARE_GLOBAL_DATA_PTR;
24 * Needed to align size SPL image to a 4-byte length
26 u32 end_align __attribute__ ((section(".end_align")));
29 * Return selected boot device. On MPC5200 its only NOR flash right now.
31 u32 spl_boot_device(void)
33 return BOOT_DEVICE_NOR;
37 * SPL version of board_init_f()
39 void board_init_f(ulong bootflag)
41 end_align = (u32)__spl_flash_end;
44 * On MPC5200, the initial RAM (and gd) is located in the internal
45 * SRAM. So we can actually call the preloader console init code
46 * before calling initdram(). This makes serial output (printf)
47 * available very early, even before SDRAM init, which has been
48 * an U-Boot priciple from day 1.
52 * Init global_data pointer. Has to be done before calling
53 * get_clocks(), as it stores some clock values into gd needed
54 * later on in the serial driver.
56 /* Pointer is writable since we allocated a register for it */
57 gd = (gd_t *)(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
58 /* Clear initial global data */
59 memset((void *)gd, 0, sizeof(gd_t));
62 * get_clocks() needs to be called so that the serial driver
68 * Do rudimental console / serial setup
70 preloader_console_init();
73 * First we need to initialize the SDRAM, so that the real
74 * U-Boot or the OS (Linux) can be loaded
79 memset(__bss_start, '\0', __bss_end - __bss_start);
82 * Call board_init_r() (SPL framework version) to load and boot
85 board_init_r(NULL, 0);
86 /* Does not return!!! */