diff options
| author | Magnus Damm <damm@opensource.se> | 2025-07-02 19:13:46 +0200 |
|---|---|---|
| committer | Marek Vasut <marek.vasut+renesas@mailbox.org> | 2025-07-10 19:26:56 +0200 |
| commit | 6e20aa243d0b373cfd30e5c47c357d132bf795e2 (patch) | |
| tree | 8b9b133da2a85ac36bd166dfdb0fe1b20fb022c4 /board/renesas/common/rza1-common.c | |
| parent | 74fc581374174c7d9622b0373dd497a2acba9087 (diff) | |
ARM: renesas: Put common r7s72100 code in board/renesas/common
Break out SoC specific code from the GR-Peach board and put it into the
board/renesas/common directory so it can be easily shared between the
GR-Peach and Genmai boards.
Signed-off-by: Magnus Damm <damm@opensource.se>
Diffstat (limited to 'board/renesas/common/rza1-common.c')
| -rw-r--r-- | board/renesas/common/rza1-common.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/board/renesas/common/rza1-common.c b/board/renesas/common/rza1-common.c new file mode 100644 index 00000000000..5027319a58a --- /dev/null +++ b/board/renesas/common/rza1-common.c @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2017 Renesas Electronics + * Copyright (C) Chris Brandt + */ + +#include <init.h> +#include <asm/io.h> + +#define RZA1_WDT_BASE 0xfcfe0000 +#define WTCSR 0x00 +#define WTCNT 0x02 +#define WRCSR 0x04 + +void __weak reset_cpu(void) +{ + /* Dummy read (must read WRCSR:WOVF at least once before clearing) */ + readb(RZA1_WDT_BASE + WRCSR); + + writew(0xa500, RZA1_WDT_BASE + WRCSR); + writew(0x5a5f, RZA1_WDT_BASE + WRCSR); + writew(0x5a00, RZA1_WDT_BASE + WTCNT); + writew(0xa578, RZA1_WDT_BASE + WTCSR); + + for (;;) + asm volatile("wfi"); +} |