u-boot/common/init/handoff.c
Simon Glass b0edea3c27 spl: Add support for passing handoff info to U-Boot proper
There is some basic informaton that SPL normally wants to pass through to
U-Boot, such as the SDRAM size and bank information.

Mkae use of the new bloblist structure for this. Add a new 'handoff' blob
which is set up in SPL and passed to U-Boot proper. Also adda  test for
sandbox_spl that checks that this works correctly and a new 'sb' command
to show the information passed from SPL.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2018-11-26 08:25:37 -05:00

47 lines
885 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Passing basic information from SPL to U-Boot proper
*
* Copyright 2018 Google, Inc
*/
#include <common.h>
#include <handoff.h>
DECLARE_GLOBAL_DATA_PTR;
void handoff_save_dram(struct spl_handoff *ho)
{
ho->ram_size = gd->ram_size;
#ifdef CONFIG_NR_DRAM_BANKS
{
struct bd_info *bd = gd->bd;
int i;
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
ho->ram_bank[i].start = bd->bi_dram[i].start;
ho->ram_bank[i].size = bd->bi_dram[i].size;
}
}
#endif
}
void handoff_load_dram_size(struct spl_handoff *ho)
{
gd->ram_size = ho->ram_size;
}
void handoff_load_dram_banks(struct spl_handoff *ho)
{
#ifdef CONFIG_NR_DRAM_BANKS
{
struct bd_info *bd = gd->bd;
int i;
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
bd->bi_dram[i].start = ho->ram_bank[i].start;
bd->bi_dram[i].size = ho->ram_bank[i].size;
}
}
#endif
}