diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2013-11-08 11:18:49 +0000 |
|---|---|---|
| committer | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2013-11-09 17:21:01 +0100 |
| commit | a257f6263b51321ecacc69ac1effbcbe2158fe15 (patch) | |
| tree | 0087af9ab0339ce5496dbd810ae1b12a0fc97b76 /board/imgtec/malta | |
| parent | 7a9d109b00a207b481b05d8e147673da33ad1cd3 (diff) | |
| download | u-boot-imx-a257f6263b51321ecacc69ac1effbcbe2158fe15.zip u-boot-imx-a257f6263b51321ecacc69ac1effbcbe2158fe15.tar.gz u-boot-imx-a257f6263b51321ecacc69ac1effbcbe2158fe15.tar.bz2 | |
malta: setup super I/O UARTs
On a real Malta the Super I/O needs to be configured before we are able
to access the UARTs. This patch performs that configuration, setting up
the UARTs in the same way that YAMON would.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Diffstat (limited to 'board/imgtec/malta')
| -rw-r--r-- | board/imgtec/malta/Makefile | 1 | ||||
| -rw-r--r-- | board/imgtec/malta/malta.c | 10 | ||||
| -rw-r--r-- | board/imgtec/malta/superio.c | 63 | ||||
| -rw-r--r-- | board/imgtec/malta/superio.h | 15 |
4 files changed, 89 insertions, 0 deletions
diff --git a/board/imgtec/malta/Makefile b/board/imgtec/malta/Makefile index 091830d..19dd3a3 100644 --- a/board/imgtec/malta/Makefile +++ b/board/imgtec/malta/Makefile @@ -7,3 +7,4 @@ obj-y = malta.o obj-y += lowlevel_init.o +obj-y += superio.o diff --git a/board/imgtec/malta/malta.c b/board/imgtec/malta/malta.c index 7eddf1c..09da9ea 100644 --- a/board/imgtec/malta/malta.c +++ b/board/imgtec/malta/malta.c @@ -12,6 +12,8 @@ #include <asm/malta.h> #include <pci_gt64120.h> +#include "superio.h" + phys_size_t initdram(int board_type) { return CONFIG_SYS_MEM_SIZE; @@ -36,6 +38,14 @@ void _machine_restart(void) __raw_writel(GORESET, reset_base); } +int board_early_init_f(void) +{ + /* setup FDC37M817 super I/O controller */ + malta_superio_init((void *)CKSEG1ADDR(MALTA_IO_PORT_BASE)); + + return 0; +} + void pci_init_board(void) { set_io_port_base(CKSEG1ADDR(MALTA_IO_PORT_BASE)); 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); +} diff --git a/board/imgtec/malta/superio.h b/board/imgtec/malta/superio.h new file mode 100644 index 0000000..1450da5 --- /dev/null +++ b/board/imgtec/malta/superio.h @@ -0,0 +1,15 @@ +/* + * 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+ + */ + +#ifndef __BOARD_MALTA_SUPERIO_H__ +#define __BOARD_MALTA_SUPERIO_H__ + +extern void malta_superio_init(void *io_base); + +#endif /* __BOARD_MALTA_SUPERIO_H__ */ |