2 * The generic setup file for PMC-Sierra MSP processors
4 * Copyright 2005-2007 PMC-Sierra, Inc,
5 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 #include <linux/delay.h>
15 #include <asm/bootinfo.h>
16 #include <asm/cacheflush.h>
18 #include <asm/r4kcache.h>
19 #include <asm/reboot.h>
20 #include <asm/smp-ops.h>
26 #if defined(CONFIG_PMC_MSP7120_GW)
27 #include <msp_regops.h>
28 #define MSP_BOARD_RESET_GPIO 9
31 extern void msp_serial_setup(void);
33 #if defined(CONFIG_PMC_MSP7120_EVAL) || \
34 defined(CONFIG_PMC_MSP7120_GW) || \
35 defined(CONFIG_PMC_MSP7120_FPGA)
37 * Performs the reset for MSP7120-based boards
39 void msp7120_reset(void)
41 void *start, *end, *iptr;
43 /* Diasble all interrupts */
45 #ifdef CONFIG_SYS_SUPPORTS_MULTITHREADING
49 /* Cache the reset code of this function */
50 __asm__ __volatile__ (
53 " la %0,startpoint \n"
56 : "=r" (start), "=r" (end)
60 for (iptr = (void *)((unsigned int)start & ~(L1_CACHE_BYTES - 1));
61 iptr < end; iptr += L1_CACHE_BYTES)
64 __asm__ __volatile__ (
68 /* Put the DDRC into self-refresh mode */
69 DDRC_INDIRECT_WRITE(DDRC_CTL(10), 0xb, 1 << 16);
73 * DO NOT do anything from here on out that might even
74 * think about fetching from RAM - i.e., don't call any
75 * non-inlined functions, and be VERY sure that any inline
76 * functions you do call do NOT access any sort of RAM
80 /* Wait a bit for the DDRC to settle */
83 #if defined(CONFIG_PMC_MSP7120_GW)
85 * Set GPIO 9 HI, (tied to board reset logic)
86 * GPIO 9 is the 4th GPIO of register 3
88 * NOTE: We cannot use the higher-level msp_gpio_mode()/out()
89 * as GPIO char driver may not be enabled and it would look up
92 set_value_reg32(GPIO_CFG3_REG, 0xf000, 0x8000);
93 set_reg32(GPIO_DATA3_REG, 8);
96 * In case GPIO9 doesn't reset the board (jumper configurable!)
97 * fallback to device reset below.
100 /* Set bit 1 of the MSP7120 reset register */
101 *RST_SET_REG = 0x00000001;
103 __asm__ __volatile__ (
109 void msp_restart(char *command)
111 printk(KERN_WARNING "Now rebooting .......\n");
113 #if defined(CONFIG_PMC_MSP7120_EVAL) || \
114 defined(CONFIG_PMC_MSP7120_GW) || \
115 defined(CONFIG_PMC_MSP7120_FPGA)
118 /* No chip-specific reset code, just jump to the ROM reset vector */
119 set_c0_status(ST0_BEV | ST0_ERL);
120 change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
124 __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
130 printk(KERN_WARNING "\n** You can safely turn off the power\n");
132 /* If possible call official function to get CPU WARs */
136 __asm__(".set\tmips3\n\t" "wait\n\t" ".set\tmips0");
139 void msp_power_off(void)
144 void __init plat_mem_setup(void)
146 _machine_restart = msp_restart;
147 _machine_halt = msp_halt;
148 pm_power_off = msp_power_off;
151 void __init prom_init(void)
153 unsigned long family;
154 unsigned long revision;
157 prom_argv = (char **)fw_arg1;
158 prom_envp = (char **)fw_arg2;
161 * Someday we can use this with PMON2000 to get a
162 * platform call prom routines for output etc. without
163 * having to use grody hacks. For now it's unused.
165 * struct callvectors *cv = (struct callvectors *) fw_arg3;
167 family = identify_family();
168 revision = identify_revision();
172 if (FPGA_IS_MSP4200(revision)) {
173 /* Old-style revision ID */
174 mips_machtype = MACH_MSP4200_FPGA;
176 mips_machtype = MACH_MSP_OTHER;
181 #if defined(CONFIG_PMC_MSP4200_EVAL)
182 mips_machtype = MACH_MSP4200_EVAL;
183 #elif defined(CONFIG_PMC_MSP4200_GW)
184 mips_machtype = MACH_MSP4200_GW;
186 mips_machtype = MACH_MSP_OTHER;
190 case FAMILY_MSP4200_FPGA:
191 mips_machtype = MACH_MSP4200_FPGA;
195 #if defined(CONFIG_PMC_MSP7120_EVAL)
196 mips_machtype = MACH_MSP7120_EVAL;
197 #elif defined(CONFIG_PMC_MSP7120_GW)
198 mips_machtype = MACH_MSP7120_GW;
200 mips_machtype = MACH_MSP_OTHER;
204 case FAMILY_MSP7100_FPGA:
205 mips_machtype = MACH_MSP7120_FPGA;
209 /* we don't recognize the machine */
210 mips_machtype = MACH_UNKNOWN;
211 panic("***Bogosity factor five***, exiting");
220 * Sub-system setup follows.
221 * Setup functions can either be called here or using the
222 * subsys_initcall mechanism (i.e. see msp_pci_setup). The
223 * order in which they are called can be changed by using the
224 * link order in arch/mips/pmc-sierra/msp71xx/Makefile.
226 * NOTE: Please keep sub-system specific initialization code
227 * in separate specific files.
231 register_vsmp_smp_ops();