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ARM: rmobile: Ignore U-Boot env when started via JTAG on Stout

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When U-Boot is started via JTAG, ignore the installed environment
as it may interfere with the recovery of the board.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
This commit is contained in:
Marek Vasut 2018-04-17 01:07:23 +02:00 committed by Marek Vasut
parent 1a6e8dda49
commit a3c159b9c3
1 changed files with 15 additions and 0 deletions
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15
board/renesas/stout/stout.c
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@ -128,3 +128,18 @@ int board_phy_config(struct phy_device *phydev)
const struct rmobile_sysinfo sysinfo = {
CONFIG_ARCH_RMOBILE_BOARD_STRING
};
enum env_location env_get_location(enum env_operation op, int prio)
{
const u32 load_magic = 0xb33fc0de;
/* Block environment access if loaded using JTAG */
if ((readl(CONFIG_SPL_TEXT_BASE + 0x24) == load_magic) &&
(op != ENVOP_INIT))
return ENVL_UNKNOWN;
if (prio)
return ENVL_UNKNOWN;
return ENVL_SPI_FLASH;
}