u-boot/board/imgtec/boston/ddr.c
Simon Glass 67c4e9f815 common: Move board_get_usable_ram_top() out of common.h
Move this function into init.h which seems to be designed for this sort
of thing. Also update the header to declare struct global_data so that it
can be included without global_data.h being needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:25:04 -05:00

35 lines
640 B
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2016 Imagination Technologies
*/
#include <common.h>
#include <init.h>
#include <asm/io.h>
#include "boston-regs.h"
DECLARE_GLOBAL_DATA_PTR;
int dram_init(void)
{
u32 ddrconf0 = __raw_readl((uint32_t *)BOSTON_PLAT_DDRCONF0);
gd->ram_size = (phys_size_t)(ddrconf0 & BOSTON_PLAT_DDRCONF0_SIZE) <<
30;
return 0;
}
ulong board_get_usable_ram_top(ulong total_size)
{
DECLARE_GLOBAL_DATA_PTR;
if (gd->ram_top < CONFIG_SYS_SDRAM_BASE) {
/* 2GB wrapped around to 0 */
return CKSEG0ADDR(256 << 20);
}
return min_t(unsigned long, gd->ram_top, CKSEG0ADDR(256 << 20));
}