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| author | Tom Rini <trini@ti.com> | 2013-11-11 09:40:34 -0500 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-11-11 09:40:34 -0500 |
| commit | 60390d70be7336b2441f5f69bd4f5affa83d064d (patch) | |
| tree | 857824f8b7f5f7aaf2f5dac91eea94392818a7a0 /board/imgtec/malta/superio.c | |
| parent | 85b8c5c4bf80025de4632ae6c9a8a606e51508a4 (diff) | |
| parent | a3e80904fb07cda792e636704e3b3950d1446af3 (diff) | |
| download | u-boot-imx-60390d70be7336b2441f5f69bd4f5affa83d064d.zip u-boot-imx-60390d70be7336b2441f5f69bd4f5affa83d064d.tar.gz u-boot-imx-60390d70be7336b2441f5f69bd4f5affa83d064d.tar.bz2 | |
Merge branch 'master' of git://git.denx.de/u-boot-mips
Diffstat (limited to 'board/imgtec/malta/superio.c')
| -rw-r--r-- | board/imgtec/malta/superio.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/board/imgtec/malta/superio.c b/board/imgtec/malta/superio.c new file mode 100644 index 0000000..eaa14df --- /dev/null +++ b/board/imgtec/malta/superio.c @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2013 Imagination Technologies + * Author: Paul Burton <paul.burton@imgtec.com> + * + * Setup code for the FDC37M817 super I/O controller + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> + +#define SIO_CONF_PORT 0x3f0 +#define SIO_DATA_PORT 0x3f1 + +enum sio_conf_key { + SIOCONF_DEVNUM = 0x07, + SIOCONF_ACTIVATE = 0x30, + SIOCONF_ENTER_SETUP = 0x55, + SIOCONF_BASE_HIGH = 0x60, + SIOCONF_BASE_LOW = 0x61, + SIOCONF_PRIMARY_INT = 0x70, + SIOCONF_EXIT_SETUP = 0xaa, + SIOCONF_MODE = 0xf0, +}; + +static struct { + u8 key; + u8 data; +} sio_config[] = { + /* tty0 */ + { SIOCONF_DEVNUM, 0x04 }, + { SIOCONF_BASE_HIGH, 0x03 }, + { SIOCONF_BASE_LOW, 0xf8 }, + { SIOCONF_MODE, 0x02 }, + { SIOCONF_PRIMARY_INT, 0x04 }, + { SIOCONF_ACTIVATE, 0x01 }, + + /* tty1 */ + { SIOCONF_DEVNUM, 0x05 }, + { SIOCONF_BASE_HIGH, 0x02 }, + { SIOCONF_BASE_LOW, 0xf8 }, + { SIOCONF_MODE, 0x02 }, + { SIOCONF_PRIMARY_INT, 0x03 }, + { SIOCONF_ACTIVATE, 0x01 }, +}; + +void malta_superio_init(void *io_base) +{ + unsigned i; + + /* enter config state */ + writeb(SIOCONF_ENTER_SETUP, io_base + SIO_CONF_PORT); + + /* configure peripherals */ + for (i = 0; i < ARRAY_SIZE(sio_config); i++) { + writeb(sio_config[i].key, io_base + SIO_CONF_PORT); + writeb(sio_config[i].data, io_base + SIO_DATA_PORT); + } + + /* exit config state */ + writeb(SIOCONF_EXIT_SETUP, io_base + SIO_CONF_PORT); +} |