diff options
author | Wim Vervoorn <wvervoorn@eltan.com> | 2019-10-17 13:20:42 +0200 |
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committer | Patrick Georgi <pgeorgi@google.com> | 2019-10-18 12:27:12 +0000 |
commit | 467802b6285b2b9a76f755dffeef61194ee35373 (patch) | |
tree | dfbaa46da2dadd63d625ebdd2d0fe0dfe55be438 /src/mainboard/facebook/fbg1701/cpld.c | |
parent | bac6946956ac2b801b9895f7443dca055a639d64 (diff) |
mb/facebook/fbg1701: separate cpld support
Move all code involving the cpld to a single file.
Rename mainboard_read_pcb_version() to cpld_read_pcb_version().
BUG=N/A
TEST=tested on fbg1701 board
Change-Id: I9ee9a2c605e8b63baa7d64af92f45aa07e0d9d9e
Signed-off-by: Wim Vervoorn <wvervoorn@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36095
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/facebook/fbg1701/cpld.c')
-rw-r--r-- | src/mainboard/facebook/fbg1701/cpld.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/mainboard/facebook/fbg1701/cpld.c b/src/mainboard/facebook/fbg1701/cpld.c new file mode 100644 index 0000000000..7d1117f6ad --- /dev/null +++ b/src/mainboard/facebook/fbg1701/cpld.c @@ -0,0 +1,39 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2019 Eltan B.V. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/io.h> +#include "cpld.h" + +/* CPLD definitions */ +#define CPLD_PCB_VERSION_PORT 0x283 +#define CPLD_PCB_VERSION_MASK 0xF0 +#define CPLD_PCB_VERSION_BIT 4 + +#define CPLD_RESET_PORT 0x287 +#define CPLD_CMD_RESET_DSI_BRIDGE_ACTIVE 0x20 +#define CPLD_CMD_RESET_DSI_BRIDGE_INACTIVE 0x00 + +/* Reset DSI bridge */ +void cpld_reset_bridge(void) +{ + outb(CPLD_CMD_RESET_DSI_BRIDGE_ACTIVE, CPLD_RESET_PORT); + outb(CPLD_CMD_RESET_DSI_BRIDGE_INACTIVE, CPLD_RESET_PORT); +} + +/* Read PCB version */ +unsigned int cpld_read_pcb_version(void) +{ + return ((inb(CPLD_PCB_VERSION_PORT) & CPLD_PCB_VERSION_MASK) >> CPLD_PCB_VERSION_BIT); +} |