board/vpac270/onenand.c

   1 /*
   2  * Voipac PXA270 OneNAND SPL
   3  *
   4  * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <config.h>
  11 #include <asm/io.h>
  12 #include <onenand_uboot.h>
  13 #include <asm/arch/pxa.h>
  14
  15 void board_init_f(unsigned long unused)
  16 {
  17         extern uint32_t _end;
  18         uint32_t tmp;
  19
  20         asm volatile("mov %0, pc" : "=r"(tmp));
  21         tmp >>= 24;
  22
  23         /* The code runs from OneNAND RAM, copy SPL to SRAM and execute it. */
  24         if (tmp == 0) {
  25                 tmp = (uint32_t)&_end - CONFIG_SPL_TEXT_BASE;
  26                 onenand_spl_load_image(0, tmp, (void *)CONFIG_SPL_TEXT_BASE);
  27                 asm volatile("mov pc, %0" : : "r"(CONFIG_SPL_TEXT_BASE));
  28         }
  29
  30         /* Hereby, the code runs from (S)RAM, copy U-Boot and execute it. */
  31         arch_cpu_init();
  32         pxa2xx_dram_init();
  33         onenand_spl_load_image(CONFIG_SPL_ONENAND_LOAD_ADDR,
  34                                 CONFIG_SPL_ONENAND_LOAD_SIZE,
  35                                 (void *)CONFIG_SYS_TEXT_BASE);
  36         asm volatile("mov pc, %0" : : "r"(CONFIG_SYS_TEXT_BASE));
  37
  38         for (;;)
  39                 ;
  40 }
  41
  42 void __attribute__((noreturn)) hang(void)
  43 {
  44         for (;;)
  45                 ;
  46 }