diff options
Diffstat (limited to 'arch/mips/momentum/ocelot_c/prom.c')
| -rw-r--r-- | arch/mips/momentum/ocelot_c/prom.c | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/arch/mips/momentum/ocelot_c/prom.c b/arch/mips/momentum/ocelot_c/prom.c deleted file mode 100644 index 49ac302d890..00000000000 --- a/arch/mips/momentum/ocelot_c/prom.c +++ /dev/null @@ -1,243 +0,0 @@ -/* - * Copyright 2002 Momentum Computer Inc. - * Author: Matthew Dharm <mdharm@momenco.com> - * - * Louis Hamilton, Red Hat, Inc. - * hamilton@redhat.com [MIPS64 modifications] - * - * Based on Ocelot Linux port, which is - * Copyright 2001 MontaVista Software Inc. - * Author: jsun@mvista.com or jsun@junsun.net - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ -#include <linux/config.h> -#include <linux/init.h> -#include <linux/mm.h> -#include <linux/sched.h> -#include <linux/bootmem.h> - -#include <asm/addrspace.h> -#include <asm/bootinfo.h> -#include <asm/mv64340.h> -#include <asm/pmon.h> - -#include "ocelot_c_fpga.h" - -struct callvectors* debug_vectors; - -extern unsigned long marvell_base; -extern unsigned long cpu_clock; - -#ifdef CONFIG_MV643XX_ETH -extern unsigned char prom_mac_addr_base[6]; -#endif - -const char *get_system_type(void) -{ -#ifdef CONFIG_CPU_SR71000 - return "Momentum Ocelot-CS"; -#else - return "Momentum Ocelot-C"; -#endif -} - -#ifdef CONFIG_MV643XX_ETH -static void burn_clocks(void) -{ - int i; - - /* this loop should burn at least 1us -- this should be plenty */ - for (i = 0; i < 0x10000; i++) - ; -} - -static u8 exchange_bit(u8 val, u8 cs) -{ - /* place the data */ - OCELOT_FPGA_WRITE((val << 2) | cs, EEPROM_MODE); - burn_clocks(); - - /* turn the clock on */ - OCELOT_FPGA_WRITE((val << 2) | cs | 0x2, EEPROM_MODE); - burn_clocks(); - - /* turn the clock off and read-strobe */ - OCELOT_FPGA_WRITE((val << 2) | cs | 0x10, EEPROM_MODE); - - /* return the data */ - return ((OCELOT_FPGA_READ(EEPROM_MODE) >> 3) & 0x1); -} - -void get_mac(char dest[6]) -{ - u8 read_opcode[12] = {1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; - int i,j; - - for (i = 0; i < 12; i++) - exchange_bit(read_opcode[i], 1); - - for (j = 0; j < 6; j++) { - dest[j] = 0; - for (i = 0; i < 8; i++) { - dest[j] <<= 1; - dest[j] |= exchange_bit(0, 1); - } - } - - /* turn off CS */ - exchange_bit(0,0); -} -#endif - - -#ifdef CONFIG_MIPS64 - -unsigned long signext(unsigned long addr) -{ - addr &= 0xffffffff; - return (unsigned long)((int)addr); -} - -void *get_arg(unsigned long args, int arc) -{ - unsigned long ul; - unsigned char *puc, uc; - - args += (arc * 4); - ul = (unsigned long)signext(args); - puc = (unsigned char *)ul; - if (puc == 0) - return (void *)0; - -#ifdef CONFIG_CPU_LITTLE_ENDIAN - uc = *puc++; - ul = (unsigned long)uc; - uc = *puc++; - ul |= (((unsigned long)uc) << 8); - uc = *puc++; - ul |= (((unsigned long)uc) << 16); - uc = *puc++; - ul |= (((unsigned long)uc) << 24); -#else /* CONFIG_CPU_LITTLE_ENDIAN */ - uc = *puc++; - ul = ((unsigned long)uc) << 24; - uc = *puc++; - ul |= (((unsigned long)uc) << 16); - uc = *puc++; - ul |= (((unsigned long)uc) << 8); - uc = *puc++; - ul |= ((unsigned long)uc); -#endif /* CONFIG_CPU_LITTLE_ENDIAN */ - ul = signext(ul); - return (void *)ul; -} - -char *arg64(unsigned long addrin, int arg_index) -{ - unsigned long args; - char *p; - args = signext(addrin); - p = (char *)get_arg(args, arg_index); - return p; -} -#endif /* CONFIG_MIPS64 */ - - -void __init prom_init(void) -{ - int argc = fw_arg0; - char **arg = (char **) fw_arg1; - char **env = (char **) fw_arg2; - struct callvectors *cv = (struct callvectors *) fw_arg3; - int i; - -#ifdef CONFIG_MIPS64 - char *ptr; - - printk("prom_init - MIPS64\n"); - /* save the PROM vectors for debugging use */ - debug_vectors = (struct callvectors *)signext((unsigned long)cv); - - /* arg[0] is "g", the rest is boot parameters */ - arcs_cmdline[0] = '\0'; - - for (i = 1; i < argc; i++) { - ptr = (char *)arg64((unsigned long)arg, i); - if ((strlen(arcs_cmdline) + strlen(ptr) + 1) >= - sizeof(arcs_cmdline)) - break; - strcat(arcs_cmdline, ptr); - strcat(arcs_cmdline, " "); - } - i = 0; - while (1) { - ptr = (char *)arg64((unsigned long)env, i); - if (! ptr) - break; - - if (strncmp("gtbase", ptr, strlen("gtbase")) == 0) { - marvell_base = simple_strtol(ptr + strlen("gtbase="), - NULL, 16); - - if ((marvell_base & 0xffffffff00000000) == 0) - marvell_base |= 0xffffffff00000000; - - printk("marvell_base set to 0x%016lx\n", marvell_base); - } - if (strncmp("cpuclock", ptr, strlen("cpuclock")) == 0) { - cpu_clock = simple_strtol(ptr + strlen("cpuclock="), - NULL, 10); - printk("cpu_clock set to %d\n", cpu_clock); - } - i++; - } - printk("arcs_cmdline: %s\n", arcs_cmdline); - -#else /* CONFIG_MIPS64 */ - /* save the PROM vectors for debugging use */ - debug_vectors = cv; - - /* arg[0] is "g", the rest is boot parameters */ - arcs_cmdline[0] = '\0'; - for (i = 1; i < argc; i++) { - if (strlen(arcs_cmdline) + strlen(arg[i] + 1) - >= sizeof(arcs_cmdline)) - break; - strcat(arcs_cmdline, arg[i]); - strcat(arcs_cmdline, " "); - } - - while (*env) { - if (strncmp("gtbase", *env, strlen("gtbase")) == 0) { - marvell_base = simple_strtol(*env + strlen("gtbase="), - NULL, 16); - } - if (strncmp("cpuclock", *env, strlen("cpuclock")) == 0) { - cpu_clock = simple_strtol(*env + strlen("cpuclock="), - NULL, 10); - } - env++; - } -#endif /* CONFIG_MIPS64 */ - - mips_machgroup = MACH_GROUP_MOMENCO; - mips_machtype = MACH_MOMENCO_OCELOT_C; - -#ifdef CONFIG_MV643XX_ETH - /* get the base MAC address for on-board ethernet ports */ - get_mac(prom_mac_addr_base); -#endif - -#ifndef CONFIG_MIPS64 - debug_vectors->printf("Booting Linux kernel...\n"); -#endif -} - -unsigned long __init prom_free_prom_memory(void) -{ - return 0; -} |