u-boot/cmd/sb.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

66 lines
1.3 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018, Google Inc.
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <dm.h>
#include <spl.h>
#include <asm/state.h>
static int do_sb_handoff(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
#if CONFIG_IS_ENABLED(HANDOFF)
if (gd->spl_handoff)
printf("SPL handoff magic %lx\n", gd->spl_handoff->arch.magic);
else
printf("SPL handoff info not received\n");
return 0;
#else
printf("Command not supported\n");
return CMD_RET_USAGE;
#endif
}
static int do_sb_state(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
struct sandbox_state *state;
state = state_get_current();
state_show(state);
return 0;
}
static cmd_tbl_t cmd_sb_sub[] = {
U_BOOT_CMD_MKENT(handoff, 1, 0, do_sb_handoff, "", ""),
U_BOOT_CMD_MKENT(state, 1, 0, do_sb_state, "", ""),
};
static int do_sb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
cmd_tbl_t *c;
/* Skip past 'sb' */
argc--;
argv++;
c = find_cmd_tbl(argv[0], cmd_sb_sub, ARRAY_SIZE(cmd_sb_sub));
if (c)
return c->cmd(cmdtp, flag, argc, argv);
else
return CMD_RET_USAGE;
}
U_BOOT_CMD(
sb, 8, 1, do_sb,
"Sandbox status commands",
"handoff - Show handoff data received from SPL\n"
"sb state - Show sandbox state"
);