mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 19:50:53 +07:00
7fea1ba58e
Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
205 lines
4.6 KiB
C
205 lines
4.6 KiB
C
/*
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* linux/arch/arm/mach-sa1100/hackkit.c
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*
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* Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
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*
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* This file contains all HackKit tweaks. Based on original work from
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* Nicolas Pitre's assabet fixes
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/tty.h>
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/cpufreq.h>
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#include <linux/serial_core.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <asm/mach-types.h>
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#include <asm/setup.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/serial_sa1100.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include "generic.h"
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/**********************************************************************
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* prototypes
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*/
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/* init funcs */
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static void __init hackkit_map_io(void);
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static u_int hackkit_get_mctrl(struct uart_port *port);
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static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
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static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
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/**********************************************************************
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* global data
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*/
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/**********************************************************************
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* static data
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*/
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static struct map_desc hackkit_io_desc[] __initdata = {
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{ /* Flash bank 0 */
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.virtual = 0xe8000000,
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.pfn = __phys_to_pfn(0x00000000),
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.length = 0x01000000,
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.type = MT_DEVICE
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},
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};
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static struct sa1100_port_fns hackkit_port_fns __initdata = {
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.set_mctrl = hackkit_set_mctrl,
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.get_mctrl = hackkit_get_mctrl,
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.pm = hackkit_uart_pm,
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};
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/**********************************************************************
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* Static functions
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*/
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static void __init hackkit_map_io(void)
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{
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sa1100_map_io();
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iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
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sa1100_register_uart_fns(&hackkit_port_fns);
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sa1100_register_uart(0, 1); /* com port */
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sa1100_register_uart(1, 2);
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sa1100_register_uart(2, 3); /* radio module */
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Ser1SDCR0 |= SDCR0_SUS;
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}
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/**
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* hackkit_uart_pm - powermgmt callback function for system 3 UART
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* @port: uart port structure
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* @state: pm state
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* @oldstate: old pm state
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*
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*/
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static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
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{
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/* TODO: switch on/off uart in powersave mode */
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}
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/*
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* Note! this can be called from IRQ context.
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* FIXME: No modem ctrl lines yet.
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*/
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static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
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{
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#if 0
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if (port->mapbase == _Ser1UTCR0) {
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u_int set = 0, clear = 0;
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if (mctrl & TIOCM_RTS)
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set |= PT_CTRL2_RS1_RTS;
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else
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clear |= PT_CTRL2_RS1_RTS;
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if (mctrl & TIOCM_DTR)
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set |= PT_CTRL2_RS1_DTR;
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else
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clear |= PT_CTRL2_RS1_DTR;
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PTCTRL2_clear(clear);
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PTCTRL2_set(set);
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}
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#endif
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}
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static u_int hackkit_get_mctrl(struct uart_port *port)
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{
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u_int ret = 0;
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#if 0
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u_int irqsr = PT_IRQSR;
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/* need 2 reads to read current value */
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irqsr = PT_IRQSR;
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/* TODO: check IRQ source register for modem/com
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status lines and set them correctly. */
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#endif
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ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
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return ret;
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}
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static struct mtd_partition hackkit_partitions[] = {
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{
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.name = "BLOB",
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.size = 0x00040000,
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.offset = 0x00000000,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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}, {
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.name = "config",
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.size = 0x00040000,
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.offset = MTDPART_OFS_APPEND,
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}, {
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.name = "kernel",
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.size = 0x00100000,
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.offset = MTDPART_OFS_APPEND,
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}, {
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.name = "initrd",
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.size = 0x00180000,
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.offset = MTDPART_OFS_APPEND,
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}, {
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.name = "rootfs",
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.size = 0x700000,
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.offset = MTDPART_OFS_APPEND,
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}, {
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.name = "data",
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.size = MTDPART_SIZ_FULL,
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.offset = MTDPART_OFS_APPEND,
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}
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};
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static struct flash_platform_data hackkit_flash_data = {
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.map_name = "cfi_probe",
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.parts = hackkit_partitions,
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.nr_parts = ARRAY_SIZE(hackkit_partitions),
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};
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static struct resource hackkit_flash_resource =
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DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
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static void __init hackkit_init(void)
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{
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sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1);
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}
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/**********************************************************************
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* Exported Functions
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*/
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MACHINE_START(HACKKIT, "HackKit Cpu Board")
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.atag_offset = 0x100,
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.map_io = hackkit_map_io,
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.nr_irqs = SA1100_NR_IRQS,
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.init_irq = sa1100_init_irq,
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.timer = &sa1100_timer,
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.init_machine = hackkit_init,
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.init_late = sa11x0_init_late,
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.restart = sa11x0_restart,
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MACHINE_END
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