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/*
* (C) Copyright 2013
* David Feng <fenghua@phytium.com.cn>
* Sharma Bhupesh <bhupesh.sharma@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.h>
#include <errno.h>
#include <netdev.h>
#include <asm/io.h>
#include <linux/compiler.h>
#include <asm/semihosting.h>
DECLARE_GLOBAL_DATA_PTR;
int board_init(void)
{
return 0;
}
int dram_init(void)
{
/*
* Clear spin table so that secondary processors
* observe the correct value after waken up from wfe.
*/
*(unsigned long *)CPU_RELEASE_ADDR = 0;
gd->ram_size = PHYS_SDRAM_1_SIZE;
return 0;
}
/*
* Board specific reset that is system reset.
*/
void reset_cpu(ulong addr)
{
}
#ifdef CONFIG_BOARD_LATE_INIT
int board_late_init(void)
{
#ifdef CONFIG_SEMIHOSTING
/*
* Please refer to doc/README.semihosting for a more complete
* description.
*
* We require that the board include file defines these env variables:
* - kernel_name
* - kernel_addr_r
* - initrd_name
* - initrd_addr_r
* - fdt_name
* - fdt_addr_r
*
* For the "fdt chosen" startup macro, this code will then define:
* - initrd_end (based on initrd_addr_r plus actual initrd_size)
*
* We will then load the kernel, initrd, and fdt into the specified
* locations in memory in a similar way that the ATF fastmodel code
* uses semihosting calls to load other boot stages and u-boot itself.
*/
/* Env variable strings */
char *kernel_name = getenv("kernel_name");
char *kernel_addr_str = getenv("kernel_addr_r");
char *initrd_name = getenv("initrd_name");
char *initrd_addr_str = getenv("initrd_addr_r");
char *fdt_name = getenv("fdt_name");
char *fdt_addr_str = getenv("fdt_addr_r");
char initrd_end_str[64];
/* Actual addresses converted from env variables */
void *kernel_addr_r;
void *initrd_addr_r;
void *fdt_addr_r;
/* Actual initrd base and size */
unsigned long initrd_base;
unsigned long initrd_size;
/* Space available */
int avail;
/* Make sure the environment variables needed are set */
if (!(kernel_addr_str && initrd_addr_str && fdt_addr_str)) {
printf("%s: Define {kernel/initrd/fdt}_addr_r\n", __func__);
return -1;
}
if (!(kernel_name && initrd_name && fdt_name)) {
printf("%s: Define {kernel/initrd/fdt}_name\n", __func__);
return -1;
}
/* Get exact initrd_size */
initrd_size = smh_len(initrd_name);
if (initrd_size == -1) {
printf("%s: Can't get file size for \'%s\'\n", __func__,
initrd_name);
return -1;
}
/* Set initrd_end */
initrd_base = simple_strtoul(initrd_addr_str, NULL, 16);
initrd_addr_r = (void *)initrd_base;
sprintf(initrd_end_str, "0x%lx", initrd_base + initrd_size - 1);
setenv("initrd_end", initrd_end_str);
/* Load kernel to memory */
fdt_addr_r = (void *)simple_strtoul(fdt_addr_str, NULL, 16);
kernel_addr_r = (void *)simple_strtoul(kernel_addr_str, NULL, 16);
/*
* The kernel must be lower in memory than fdt and loading the
* kernel must not trample the fdt or vice versa.
*/
avail = fdt_addr_r - kernel_addr_r;
if (avail < 0) {
printf("%s: fdt must be after kernel\n", __func__);
return -1;
}
smh_load(kernel_name, kernel_addr_r, avail, 1);
/* Load fdt to memory */
smh_load(fdt_name, fdt_addr_r, 0x20000, 1);
/* Load initrd to memory */
smh_load(initrd_name, initrd_addr_r, initrd_size, 1);
#endif /* CONFIG_SEMIHOSTING */
return 0;
}
#endif /* CONFIG_BOARD_LATE_INIT */
/*
* Board specific ethernet initialization routine.
*/
int board_eth_init(bd_t *bis)
{
int rc = 0;
#ifdef CONFIG_SMC91111
rc = smc91111_initialize(0, CONFIG_SMC91111_BASE);
#endif
return rc;
}
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