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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/arm/mach-footbridge/cats-hw.c | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-footbridge/cats-hw.c')
| -rw-r--r-- | arch/arm/mach-footbridge/cats-hw.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/arm/mach-footbridge/cats-hw.c b/arch/arm/mach-footbridge/cats-hw.c new file mode 100644 index 000000000..e575dc069 --- /dev/null +++ b/arch/arm/mach-footbridge/cats-hw.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * linux/arch/arm/mach-footbridge/cats-hw.c + * + * CATS machine fixup + * + * Copyright (C) 1998, 1999 Russell King, Phil Blundell + */ +#include <linux/ioport.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/screen_info.h> +#include <linux/io.h> +#include <linux/spinlock.h> + +#include <asm/hardware/dec21285.h> +#include <asm/mach-types.h> +#include <asm/setup.h> + +#include <asm/mach/arch.h> + +#include "common.h" + +#define CFG_PORT 0x370 +#define INDEX_PORT (CFG_PORT) +#define DATA_PORT (CFG_PORT + 1) + +static int __init cats_hw_init(void) +{ + if (machine_is_cats()) { + /* Set Aladdin to CONFIGURE mode */ + outb(0x51, CFG_PORT); + outb(0x23, CFG_PORT); + + /* Select logical device 3 */ + outb(0x07, INDEX_PORT); + outb(0x03, DATA_PORT); + + /* Set parallel port to DMA channel 3, ECP+EPP1.9, + enable EPP timeout */ + outb(0x74, INDEX_PORT); + outb(0x03, DATA_PORT); + + outb(0xf0, INDEX_PORT); + outb(0x0f, DATA_PORT); + + outb(0xf1, INDEX_PORT); + outb(0x07, DATA_PORT); + + /* Select logical device 4 */ + outb(0x07, INDEX_PORT); + outb(0x04, DATA_PORT); + + /* UART1 high speed mode */ + outb(0xf0, INDEX_PORT); + outb(0x02, DATA_PORT); + + /* Select logical device 5 */ + outb(0x07, INDEX_PORT); + outb(0x05, DATA_PORT); + + /* UART2 high speed mode */ + outb(0xf0, INDEX_PORT); + outb(0x02, DATA_PORT); + + /* Set Aladdin to RUN mode */ + outb(0xbb, CFG_PORT); + } + + return 0; +} + +__initcall(cats_hw_init); + +/* + * CATS uses soft-reboot by default, since + * hard reboots fail on early boards. + */ +static void __init +fixup_cats(struct tag *tags, char **cmdline) +{ +#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE) + screen_info.orig_video_lines = 25; + screen_info.orig_video_points = 16; + screen_info.orig_y = 24; +#endif +} + +MACHINE_START(CATS, "Chalice-CATS") + /* Maintainer: Philip Blundell */ + .atag_offset = 0x100, + .reboot_mode = REBOOT_SOFT, + .fixup = fixup_cats, + .map_io = footbridge_map_io, + .init_irq = footbridge_init_irq, + .init_time = isa_timer_init, + .restart = footbridge_restart, +MACHINE_END |