diff options
Diffstat (limited to 'arch/powerpc/cpu/74xx_7xx/cpu.c')
| -rw-r--r-- | arch/powerpc/cpu/74xx_7xx/cpu.c | 300 |
1 files changed, 0 insertions, 300 deletions
diff --git a/arch/powerpc/cpu/74xx_7xx/cpu.c b/arch/powerpc/cpu/74xx_7xx/cpu.c deleted file mode 100644 index 6cd54bf924..0000000000 --- a/arch/powerpc/cpu/74xx_7xx/cpu.c +++ /dev/null @@ -1,300 +0,0 @@ -/* - * (C) Copyright 2001 - * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * cpu.c - * - * CPU specific code - * - * written or collected and sometimes rewritten by - * Magnus Damm <damm@bitsmart.com> - * - * minor modifications by - * Wolfgang Denk <wd@denx.de> - * - * more modifications by - * Josh Huber <huber@mclx.com> - * added support for the 74xx series of cpus - * added support for the 7xx series of cpus - * made the code a little less hard-coded, and more auto-detectish - */ - -#include <common.h> -#include <command.h> -#include <74xx_7xx.h> -#include <asm/cache.h> - -#if defined(CONFIG_OF_LIBFDT) -#include <libfdt.h> -#include <fdt_support.h> -#endif - -DECLARE_GLOBAL_DATA_PTR; - -cpu_t -get_cpu_type(void) -{ - uint pvr = get_pvr(); - cpu_t type; - - type = CPU_UNKNOWN; - - switch (PVR_VER(pvr)) { - case 0x000c: - type = CPU_7400; - break; - case 0x0008: - type = CPU_750; - - if (((pvr >> 8) & 0xff) == 0x01) { - type = CPU_750CX; /* old CX (80100 and 8010x?)*/ - } else if (((pvr >> 8) & 0xff) == 0x22) { - type = CPU_750CX; /* CX (82201,82202) and CXe (82214) */ - } else if (((pvr >> 8) & 0xff) == 0x33) { - type = CPU_750CX; /* CXe (83311) */ - } else if (((pvr >> 12) & 0xF) == 0x3) { - type = CPU_755; - } - break; - - case 0x7000: - type = CPU_750FX; - break; - - case 0x7002: - type = CPU_750GX; - break; - - case 0x800C: - type = CPU_7410; - break; - - case 0x8000: - type = CPU_7450; - break; - - case 0x8001: - type = CPU_7455; - break; - - case 0x8002: - type = CPU_7457; - break; - - case 0x8003: - type = CPU_7447A; - break; - - case 0x8004: - type = CPU_7448; - break; - - default: - break; - } - - return type; -} - -/* ------------------------------------------------------------------------- */ - -#if !defined(CONFIG_BAB7xx) -int checkcpu (void) -{ - uint type = get_cpu_type(); - uint pvr = get_pvr(); - ulong clock = gd->cpu_clk; - char buf[32]; - char *str; - - puts ("CPU: "); - - switch (type) { - case CPU_750CX: - printf ("750CX%s v%d.%d", (pvr&0xf0)?"e":"", - (pvr>>8) & 0xf, - pvr & 0xf); - goto PR_CLK; - - case CPU_750: - str = "750"; - break; - - case CPU_750FX: - str = "750FX"; - break; - - case CPU_750GX: - str = "750GX"; - break; - - case CPU_755: - str = "755"; - break; - - case CPU_7400: - str = "MPC7400"; - break; - - case CPU_7410: - str = "MPC7410"; - break; - - case CPU_7447A: - str = "MPC7447A"; - break; - - case CPU_7448: - str = "MPC7448"; - break; - - case CPU_7450: - str = "MPC7450"; - break; - - case CPU_7455: - str = "MPC7455"; - break; - - case CPU_7457: - str = "MPC7457"; - break; - - default: - printf("Unknown CPU -- PVR: 0x%08x\n", pvr); - return -1; - } - - printf ("%s v%d.%d", str, (pvr >> 8) & 0xFF, pvr & 0xFF); -PR_CLK: - printf (" @ %s MHz\n", strmhz(buf, clock)); - - return (0); -} -#endif -/* these two functions are unimplemented currently [josh] */ - -/* -------------------------------------------------------------------- */ -/* L1 i-cache */ - -int -checkicache(void) -{ - return 0; /* XXX */ -} - -/* -------------------------------------------------------------------- */ -/* L1 d-cache */ - -int -checkdcache(void) -{ - return 0; /* XXX */ -} - -/* -------------------------------------------------------------------- */ - -static inline void -soft_restart(unsigned long addr) -{ - /* SRR0 has system reset vector, SRR1 has default MSR value */ - /* rfi restores MSR from SRR1 and sets the PC to the SRR0 value */ - - __asm__ __volatile__ ("mtspr 26, %0" :: "r" (addr)); - __asm__ __volatile__ ("li 4, (1 << 6)" ::: "r4"); - __asm__ __volatile__ ("mtspr 27, 4"); - __asm__ __volatile__ ("rfi"); - - while(1); /* not reached */ -} - - -#if !defined(CONFIG_BAB7xx) && \ - !defined(CONFIG_ELPPC) && \ - !defined(CONFIG_PPMC7XX) -/* no generic way to do board reset. simply call soft_reset. */ -int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - ulong addr; - /* flush and disable I/D cache */ - __asm__ __volatile__ ("mfspr 3, 1008" ::: "r3"); - __asm__ __volatile__ ("ori 5, 5, 0xcc00" ::: "r5"); - __asm__ __volatile__ ("ori 4, 3, 0xc00" ::: "r4"); - __asm__ __volatile__ ("andc 5, 3, 5" ::: "r5"); - __asm__ __volatile__ ("sync"); - __asm__ __volatile__ ("mtspr 1008, 4"); - __asm__ __volatile__ ("isync"); - __asm__ __volatile__ ("sync"); - __asm__ __volatile__ ("mtspr 1008, 5"); - __asm__ __volatile__ ("isync"); - __asm__ __volatile__ ("sync"); - -#ifdef CONFIG_SYS_RESET_ADDRESS - addr = CONFIG_SYS_RESET_ADDRESS; -#else - /* - * note: when CONFIG_SYS_MONITOR_BASE points to a RAM address, - * CONFIG_SYS_MONITOR_BASE - sizeof (ulong) is usually a valid - * address. Better pick an address known to be invalid on your - * system and assign it to CONFIG_SYS_RESET_ADDRESS. - */ - addr = CONFIG_SYS_MONITOR_BASE - sizeof (ulong); -#endif - soft_restart(addr); - - /* not reached */ - while(1) - ; - - return 1; -} -#endif - -/* ------------------------------------------------------------------------- */ - -/* - * For the 7400 the TB clock runs at 1/4 the cpu bus speed. - */ -#ifndef CONFIG_SYS_BUS_CLK -#define CONFIG_SYS_BUS_CLK gd->bus_clk -#endif - -unsigned long get_tbclk(void) -{ - return CONFIG_SYS_BUS_CLK / 4; -} - -/* ------------------------------------------------------------------------- */ - -#if defined(CONFIG_WATCHDOG) -#if !defined(CONFIG_BAB7xx) -void -watchdog_reset(void) -{ - -} -#endif /* !CONFIG_BAB7xx */ -#endif /* CONFIG_WATCHDOG */ - -/* ------------------------------------------------------------------------- */ - -#ifdef CONFIG_OF_LIBFDT -void ft_cpu_setup(void *blob, bd_t *bd) -{ - do_fixup_by_prop_u32(blob, "device_type", "cpu", 4, - "timebase-frequency", bd->bi_busfreq / 4, 1); - do_fixup_by_prop_u32(blob, "device_type", "cpu", 4, - "bus-frequency", bd->bi_busfreq, 1); - do_fixup_by_prop_u32(blob, "device_type", "cpu", 4, - "clock-frequency", bd->bi_intfreq, 1); - - fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize); - - fdt_fixup_ethernet(blob); -} -#endif -/* ------------------------------------------------------------------------- */ |