diff options
Diffstat (limited to 'arch/ppc/mach-mpc5xxx/cpu.c')
| -rw-r--r-- | arch/ppc/mach-mpc5xxx/cpu.c | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/arch/ppc/mach-mpc5xxx/cpu.c b/arch/ppc/mach-mpc5xxx/cpu.c deleted file mode 100644 index ab58967aa4..0000000000 --- a/arch/ppc/mach-mpc5xxx/cpu.c +++ /dev/null @@ -1,261 +0,0 @@ -/* - * (C) Copyright 2000-2003 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -/* - * CPU specific code for the MPC5xxx CPUs - */ - -#include <common.h> -#include <command.h> -#include <mach/mpc5xxx.h> -#include <asm/processor.h> -#include <asm/byteorder.h> -#include <asm/io.h> -#include <init.h> -#include <types.h> -#include <errno.h> -#include <of.h> -#include <restart.h> -#include <mach/clock.h> -#include <asm-generic/memory_layout.h> -#include <memory.h> - -int checkcpu (void) -{ - ulong clock = get_cpu_clock(); - uint svr, pvr; - - puts ("CPU: "); - - svr = get_svr(); - pvr = get_pvr(); - switch (SVR_VER (svr)) { - case SVR_MPC5200: - printf ("MPC5200"); - break; - default: - printf ("MPC52?? (SVR %08x)", svr); - break; - } - - printf (" v%d.%d, Core v%d.%d", SVR_MJREV (svr), SVR_MNREV (svr), - PVR_MAJ(pvr), PVR_MIN(pvr)); - printf (" at %ld Hz\n", clock); - return 0; -} - -/* ------------------------------------------------------------------------- */ - -static int mpc5xxx_reserve_region(void) -{ - struct resource *r; - - /* keep this in sync with the assembler routines setting up the stack */ - r = request_sdram_region("stack", _text_base - STACK_SIZE, STACK_SIZE); - if (r == NULL) { - pr_err("Failed to request stack region at: 0x%08lx/0x%08lx\n", - _text_base - STACK_SIZE, _text_base - 1); - return -EBUSY; - } - - return 0; -} -coredevice_initcall(mpc5xxx_reserve_region); - -static void __noreturn mpc5xxx_restart_soc(struct restart_handler *rst) -{ - ulong msr; - /* Interrupts and MMU off */ - __asm__ __volatile__ ("mfmsr %0":"=r" (msr):); - - msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR); - __asm__ __volatile__ ("mtmsr %0"::"r" (msr)); - - /* Charge the watchdog timer */ - *(vu_long *)(MPC5XXX_GPT0_COUNTER) = 0x0001000f; - *(vu_long *)(MPC5XXX_GPT0_ENABLE) = 0x9004; /* wden|ce|timer_ms */ - hang(); -} - -static int restart_register_feature(void) -{ - return restart_handler_register_fn(mpc5xxx_restart_soc); -} -coredevice_initcall(restart_register_feature); - -/* ------------------------------------------------------------------------- */ - -#ifdef CONFIG_OFTREE -static int of_mpc5200_fixup(struct device_node *root, void *unused) -{ - struct device_node *node; - - int div = in_8((void*)CFG_MBAR + 0x204) & 0x0020 ? 8 : 4; - - node = of_find_node_by_path_from(root, "/cpus/PowerPC,5200@0"); - if (!node) { - pr_err("Cannot find node '/cpus/PowerPC,5200@0' for proper CPU frequency fixup\n"); - return -EINVAL; - } - - of_property_write_u32(node, "timebase-frequency", get_timebase_clock()); - of_property_write_u32(node, "bus-frequency", get_bus_clock()); - of_property_write_u32(node, "clock-frequency", get_cpu_clock()); - - node = of_find_node_by_path_from(root, "/soc5200@f0000000"); - if (!node) { - pr_err("Cannot find node '/soc5200@f0000000' for proper SOC frequency fixup\n"); - return -EINVAL; - } - - of_property_write_u32(node, "bus-frequency", get_ipb_clock()); - of_property_write_u32(node, "system-frequency", get_bus_clock() * div); - - return 0; -} - -static int of_register_mpc5200_fixup(void) -{ - return of_register_fixup(of_mpc5200_fixup, NULL); -} -late_initcall(of_register_mpc5200_fixup); -#endif - -unsigned long mpc5200_get_sdram_size(unsigned int cs) -{ - unsigned long size; - - if (cs > 1) - return 0; - - /* retrieve size of memory connected to SDRAM CS0 */ - size = *(vu_long *)(MPC5XXX_SDRAM_CS0CFG + (cs * 4)) & 0xFF; - if (size >= 0x13) - size = (1 << (size - 0x13)) << 20; - else - size = 0; - - return size; -} - -int mpc5200_setup_bus_clocks(unsigned int ipbdiv, unsigned long pcidiv) -{ - u32 cdmcfg = *(vu_long *)MPC5XXX_CDM_CFG; - - cdmcfg &= ~0x103; - - switch (ipbdiv) { - case 1: - break; - case 2: - cdmcfg |= 0x100; - break; - default: - return -EINVAL; - } - - switch (pcidiv) { - case 1: - if (ipbdiv == 2) - return -EINVAL; - break; - case 2: - if (ipbdiv == 1) - cdmcfg |= 0x1; /* ipb / 2 */ - break; - case 4: - cdmcfg |= 0x2; /* xlb / 4 */ - break; - default: - return -EINVAL; - } - - *(vu_long *)MPC5XXX_CDM_CFG = cdmcfg; - - return 0; -} - -struct mpc5200_cs { - void *start; - void *stop; - void *cfg; - unsigned int addecr; -}; - -static struct mpc5200_cs chipselects[] = { - { - .start = (void *)MPC5XXX_CS0_START, - .stop = (void *)MPC5XXX_CS0_STOP, - .cfg = (void *)MPC5XXX_CS0_CFG, - .addecr = 1 << 16, - }, { - .start = (void *)MPC5XXX_CS1_START, - .stop = (void *)MPC5XXX_CS1_STOP, - .cfg = (void *)MPC5XXX_CS1_CFG, - .addecr = 1 << 17, - }, { - .start = (void *)MPC5XXX_CS2_START, - .stop = (void *)MPC5XXX_CS2_STOP, - .cfg = (void *)MPC5XXX_CS2_CFG, - .addecr = 1 << 18, - }, { - .start = (void *)MPC5XXX_CS3_START, - .stop = (void *)MPC5XXX_CS3_STOP, - .cfg = (void *)MPC5XXX_CS3_CFG, - .addecr = 1 << 19, - }, { - .start = (void *)MPC5XXX_CS4_START, - .stop = (void *)MPC5XXX_CS4_STOP, - .cfg = (void *)MPC5XXX_CS4_CFG, - .addecr = 1 << 20, - }, { - .start = (void *)MPC5XXX_CS5_START, - .stop = (void *)MPC5XXX_CS5_STOP, - .cfg = (void *)MPC5XXX_CS5_CFG, - .addecr = 1 << 21, - }, { - .start = (void *)MPC5XXX_CS6_START, - .stop = (void *)MPC5XXX_CS6_STOP, - .cfg = (void *)MPC5XXX_CS6_CFG, - .addecr = 1 << 26, - }, { - .start = (void *)MPC5XXX_CS7_START, - .stop = (void *)MPC5XXX_CS7_STOP, - .cfg = (void *)MPC5XXX_CS7_CFG, - .addecr = 1 << 27, - }, { - .start = (void *)MPC5XXX_BOOTCS_START, - .stop = (void *)MPC5XXX_BOOTCS_STOP, - .cfg = (void *)MPC5XXX_CS0_CFG, - .addecr = 1 << 25, - }, -}; - -void mpc5200_setup_cs(int cs, unsigned long start, unsigned long size, u32 cfg) -{ - u32 addecr; - - out_be32(chipselects[cs].start, START_REG(start)); - out_be32(chipselects[cs].stop, STOP_REG(start, size)); - out_be32(chipselects[cs].cfg, cfg); - - addecr = in_be32((void *)MPC5XXX_ADDECR); - addecr |= chipselects[cs].addecr | 1; - out_be32((void *)MPC5XXX_ADDECR, addecr); -} |