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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c83cfc9c94
initialization actually useful and as is certainly unmergable with upstream. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
189 lines
4.7 KiB
C
189 lines
4.7 KiB
C
/*
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* Carsten Langgaard, carstenl@mips.com
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* Copyright (C) 1999 MIPS Technologies, Inc. All rights reserved.
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*
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* Thomas Horsten <thh@lasat.com>
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* Copyright (C) 2000 LASAT Networks A/S.
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*
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* Brian Murphy <brian@murphy.dk>
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*
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* This program is free software; you can distribute it and/or modify it
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* 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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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Lasat specific setup.
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*/
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#include <linux/config.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <linux/tty.h>
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#include <linux/serial.h>
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#include <linux/serial_core.h>
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#include <asm/time.h>
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#include <asm/cpu.h>
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#include <asm/bootinfo.h>
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#include <asm/irq.h>
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#include <asm/serial.h>
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#include <asm/lasat/lasat.h>
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#include <asm/lasat/serial.h>
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#ifdef CONFIG_PICVUE
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#include <linux/notifier.h>
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#endif
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#include "ds1603.h"
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#include <asm/lasat/ds1603.h>
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#include <asm/lasat/picvue.h>
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#include <asm/lasat/eeprom.h>
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#include "prom.h"
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int lasat_command_line = 0;
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void lasatint_init(void);
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extern void lasat_reboot_setup(void);
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extern void pcisetup(void);
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extern void edhac_init(void *, void *, void *);
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extern void addrflt_init(void);
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struct lasat_misc lasat_misc_info[N_MACHTYPES] = {
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{(void *)KSEG1ADDR(0x1c840000), (void *)KSEG1ADDR(0x1c800000), 2},
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{(void *)KSEG1ADDR(0x11080000), (void *)KSEG1ADDR(0x11000000), 6}
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};
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struct lasat_misc *lasat_misc = NULL;
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#ifdef CONFIG_DS1603
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static struct ds_defs ds_defs[N_MACHTYPES] = {
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{ (void *)DS1603_REG_100, (void *)DS1603_REG_100,
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DS1603_RST_100, DS1603_CLK_100, DS1603_DATA_100,
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DS1603_DATA_SHIFT_100, 0, 0 },
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{ (void *)DS1603_REG_200, (void *)DS1603_DATA_REG_200,
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DS1603_RST_200, DS1603_CLK_200, DS1603_DATA_200,
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DS1603_DATA_READ_SHIFT_200, 1, 2000 }
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};
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#endif
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#ifdef CONFIG_PICVUE
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#include "picvue.h"
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static struct pvc_defs pvc_defs[N_MACHTYPES] = {
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{ (void *)PVC_REG_100, PVC_DATA_SHIFT_100, PVC_DATA_M_100,
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PVC_E_100, PVC_RW_100, PVC_RS_100 },
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{ (void *)PVC_REG_200, PVC_DATA_SHIFT_200, PVC_DATA_M_200,
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PVC_E_200, PVC_RW_200, PVC_RS_200 }
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};
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#endif
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static int lasat_panic_display(struct notifier_block *this,
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unsigned long event, void *ptr)
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{
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#ifdef CONFIG_PICVUE
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unsigned char *string = ptr;
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if (string == NULL)
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string = "Kernel Panic";
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pvc_dump_string(string);
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#endif
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return NOTIFY_DONE;
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}
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static int lasat_panic_prom_monitor(struct notifier_block *this,
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unsigned long event, void *ptr)
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{
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prom_monitor();
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return NOTIFY_DONE;
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}
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static struct notifier_block lasat_panic_block[] =
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{
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{ lasat_panic_display, NULL, INT_MAX },
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{ lasat_panic_prom_monitor, NULL, INT_MIN }
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};
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static void lasat_time_init(void)
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{
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mips_hpt_frequency = lasat_board_info.li_cpu_hz / 2;
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}
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static void lasat_timer_setup(struct irqaction *irq)
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{
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write_c0_compare(
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read_c0_count() +
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mips_hpt_frequency / HZ);
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change_c0_status(ST0_IM, IE_IRQ0 | IE_IRQ5);
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}
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#define DYNAMIC_SERIAL_INIT
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#ifdef DYNAMIC_SERIAL_INIT
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void __init serial_init(void)
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{
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#ifdef CONFIG_SERIAL_8250
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struct uart_port s;
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memset(&s, 0, sizeof(s));
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s.flags = STD_COM_FLAGS;
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s.iotype = SERIAL_IO_MEM;
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if (mips_machtype == MACH_LASAT_100) {
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s.uartclk = LASAT_BASE_BAUD_100 * 16;
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s.irq = LASATINT_UART_100;
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s.regshift = LASAT_UART_REGS_SHIFT_100;
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s.membase = (char *)KSEG1ADDR(LASAT_UART_REGS_BASE_100);
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} else {
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s.uartclk = LASAT_BASE_BAUD_200 * 16;
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s.irq = LASATINT_UART_200;
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s.regshift = LASAT_UART_REGS_SHIFT_200;
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s.membase = (char *)KSEG1ADDR(LASAT_UART_REGS_BASE_200);
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}
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if (early_serial_setup(&s) != 0)
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printk(KERN_ERR "Serial setup failed!\n");
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#endif
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}
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#endif
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void __init plat_setup(void)
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{
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int i;
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lasat_misc = &lasat_misc_info[mips_machtype];
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#ifdef CONFIG_PICVUE
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picvue = &pvc_defs[mips_machtype];
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#endif
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/* Set up panic notifier */
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for (i = 0; i < sizeof(lasat_panic_block) / sizeof(struct notifier_block); i++)
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notifier_chain_register(&panic_notifier_list, &lasat_panic_block[i]);
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lasat_reboot_setup();
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board_time_init = lasat_time_init;
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board_timer_setup = lasat_timer_setup;
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#ifdef CONFIG_DS1603
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ds1603 = &ds_defs[mips_machtype];
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rtc_get_time = ds1603_read;
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rtc_set_time = ds1603_set;
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#endif
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#ifdef DYNAMIC_SERIAL_INIT
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serial_init();
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#endif
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/* Switch from prom exception handler to normal mode */
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change_c0_status(ST0_BEV,0);
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prom_printf("Lasat specific initialization complete\n");
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}
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