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 <asm/bootinfo.h>
14 #include <asm/cacheflush.h>
15 #include <asm/r4kcache.h>
16 #include <asm/reboot.h>
17 #include <asm/smp-ops.h>
23 #if defined(CONFIG_PMC_MSP7120_GW)
24 #include <msp_regops.h>
25 #define MSP_BOARD_RESET_GPIO 9
28 extern void msp_serial_setup(void);
29 extern void pmctwiled_setup(void);
31 #if defined(CONFIG_PMC_MSP7120_EVAL) || \
32 defined(CONFIG_PMC_MSP7120_GW) || \
33 defined(CONFIG_PMC_MSP7120_FPGA)
35 * Performs the reset for MSP7120-based boards
37 void msp7120_reset(void)
39 void *start, *end, *iptr;
42 /* Diasble all interrupts */
44 #ifdef CONFIG_SYS_SUPPORTS_MULTITHREADING
48 /* Cache the reset code of this function */
49 __asm__ __volatile__ (
52 " la %0,startpoint \n"
55 : "=r" (start), "=r" (end)
59 for (iptr = (void *)((unsigned int)start & ~(L1_CACHE_BYTES - 1));
60 iptr < end; iptr += L1_CACHE_BYTES)
63 __asm__ __volatile__ (
67 /* Put the DDRC into self-refresh mode */
68 DDRC_INDIRECT_WRITE(DDRC_CTL(10), 0xb, 1 << 16);
72 * DO NOT do anything from here on out that might even
73 * think about fetching from RAM - i.e., don't call any
74 * non-inlined functions, and be VERY sure that any inline
75 * functions you do call do NOT access any sort of RAM
79 /* Wait a bit for the DDRC to settle */
80 for (i = 0; i < 100000000; i++);
82 #if defined(CONFIG_PMC_MSP7120_GW)
84 * Set GPIO 9 HI, (tied to board reset logic)
85 * GPIO 9 is the 4th GPIO of register 3
87 * NOTE: We cannot use the higher-level msp_gpio_mode()/out()
88 * as GPIO char driver may not be enabled and it would look up
91 set_value_reg32(GPIO_CFG3_REG, 0xf000, 0x8000);
92 set_reg32(GPIO_DATA3_REG, 8);
95 * In case GPIO9 doesn't reset the board (jumper configurable!)
96 * fallback to device reset below.
99 /* Set bit 1 of the MSP7120 reset register */
100 *RST_SET_REG = 0x00000001;
102 __asm__ __volatile__ (
108 void msp_restart(char *command)
110 printk(KERN_WARNING "Now rebooting .......\n");
112 #if defined(CONFIG_PMC_MSP7120_EVAL) || \
113 defined(CONFIG_PMC_MSP7120_GW) || \
114 defined(CONFIG_PMC_MSP7120_FPGA)
117 /* No chip-specific reset code, just jump to the ROM reset vector */
118 set_c0_status(ST0_BEV | ST0_ERL);
119 change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
123 __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
129 printk(KERN_WARNING "\n** You can safely turn off the power\n");
131 /* If possible call official function to get CPU WARs */
135 __asm__(".set\tmips3\n\t" "wait\n\t" ".set\tmips0");
138 void msp_power_off(void)
143 void __init plat_mem_setup(void)
145 _machine_restart = msp_restart;
146 _machine_halt = msp_halt;
147 pm_power_off = msp_power_off;
150 extern struct plat_smp_ops msp_smtc_smp_ops;
152 void __init prom_init(void)
154 unsigned long family;
155 unsigned long revision;
158 prom_argv = (char **)fw_arg1;
159 prom_envp = (char **)fw_arg2;
162 * Someday we can use this with PMON2000 to get a
163 * platform call prom routines for output etc. without
164 * having to use grody hacks. For now it's unused.
166 * struct callvectors *cv = (struct callvectors *) fw_arg3;
168 family = identify_family();
169 revision = identify_revision();
173 if (FPGA_IS_MSP4200(revision)) {
174 /* Old-style revision ID */
175 mips_machtype = MACH_MSP4200_FPGA;
177 mips_machtype = MACH_MSP_OTHER;
182 #if defined(CONFIG_PMC_MSP4200_EVAL)
183 mips_machtype = MACH_MSP4200_EVAL;
184 #elif defined(CONFIG_PMC_MSP4200_GW)
185 mips_machtype = MACH_MSP4200_GW;
187 mips_machtype = MACH_MSP_OTHER;
191 case FAMILY_MSP4200_FPGA:
192 mips_machtype = MACH_MSP4200_FPGA;
196 #if defined(CONFIG_PMC_MSP7120_EVAL)
197 mips_machtype = MACH_MSP7120_EVAL;
198 #elif defined(CONFIG_PMC_MSP7120_GW)
199 mips_machtype = MACH_MSP7120_GW;
201 mips_machtype = MACH_MSP_OTHER;
205 case FAMILY_MSP7100_FPGA:
206 mips_machtype = MACH_MSP7120_FPGA;
210 /* we don't recognize the machine */
211 mips_machtype = MACH_UNKNOWN;
212 panic("***Bogosity factor five***, exiting");
221 * Sub-system setup follows.
222 * Setup functions can either be called here or using the
223 * subsys_initcall mechanism (i.e. see msp_pci_setup). The
224 * order in which they are called can be changed by using the
225 * link order in arch/mips/pmc-sierra/msp71xx/Makefile.
227 * NOTE: Please keep sub-system specific initialization code
228 * in separate specific files.
232 if (register_vsmp_smp_ops()) {
233 #ifdef CONFIG_MIPS_MT_SMTC
234 register_smp_ops(&msp_smtc_smp_ops);
238 #ifdef CONFIG_PMCTWILED
240 * Setup LED states before the subsys_initcall loads other
241 * dependent drivers/modules.