mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 20:13:39 +00:00
54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
|
|
/*
|
|
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <image.h>
|
|
#include <init.h>
|
|
#include <lmb.h>
|
|
#include <log.h>
|
|
#include <ram.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
int dram_init(void)
|
|
{
|
|
struct ram_info ram;
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
ret = uclass_get_device(UCLASS_RAM, 0, &dev);
|
|
if (ret) {
|
|
debug("RAM init failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
ret = ram_get_info(dev, &ram);
|
|
if (ret) {
|
|
debug("Cannot get RAM size: %d\n", ret);
|
|
return ret;
|
|
}
|
|
debug("RAM init base=%lx, size=%x\n", ram.base, ram.size);
|
|
|
|
gd->ram_size = ram.size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
ulong board_get_usable_ram_top(ulong total_size)
|
|
{
|
|
phys_addr_t reg;
|
|
struct lmb lmb;
|
|
|
|
/* found enough not-reserved memory to relocated U-Boot */
|
|
lmb_init(&lmb);
|
|
lmb_add(&lmb, gd->ram_base, gd->ram_size);
|
|
boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
|
|
reg = lmb_alloc(&lmb, CONFIG_SYS_MALLOC_LEN + total_size, SZ_4K);
|
|
|
|
if (reg)
|
|
return ALIGN(reg + CONFIG_SYS_MALLOC_LEN + total_size, SZ_4K);
|
|
|
|
return gd->ram_top;
|
|
}
|