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Diffstat (limited to 'cpu/mpc5xx/cpu.c')
| -rw-r--r-- | cpu/mpc5xx/cpu.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/cpu/mpc5xx/cpu.c b/cpu/mpc5xx/cpu.c deleted file mode 100644 index 7fffebcc1e..0000000000 --- a/cpu/mpc5xx/cpu.c +++ /dev/null @@ -1,171 +0,0 @@ -/* - * (C) Copyright 2003 - * Martin Winistoerfer, martinwinistoerfer@gmx.ch. - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, - */ - -/* - * File: cpu.c - * - * Discription: Some cpu specific function for watchdog, - * cpu version test, clock setting ... - * - */ - - -#include <common.h> -#include <watchdog.h> -#include <command.h> -#include <mpc5xx.h> - -DECLARE_GLOBAL_DATA_PTR; - -#if (defined(CONFIG_MPC555)) -# define ID_STR "MPC555/556" - -/* - * Check version of cpu with Processor Version Register (PVR) - */ -static int check_cpu_version (long clock, uint pvr, uint immr) -{ - char buf[32]; - /* The highest 16 bits should be 0x0002 for a MPC555/556 */ - if ((pvr >> 16) == 0x0002) { - printf (" " ID_STR " Version %x", (pvr >> 16)); - printf (" at %s MHz:", strmhz (buf, clock)); - } else { - printf ("Not supported cpu version"); - return -1; - } - return 0; -} -#endif /* CONFIG_MPC555 */ - - -/* - * Check version of mpc5xx - */ -int checkcpu (void) -{ - ulong clock = gd->cpu_clk; - uint immr = get_immr (0); /* Return full IMMR contents */ - uint pvr = get_pvr (); /* Retrieve PVR register */ - - puts ("CPU: "); - - return check_cpu_version (clock, pvr, immr); -} - -/* - * Called by macro WATCHDOG_RESET - */ -#if defined(CONFIG_WATCHDOG) -void watchdog_reset (void) -{ - int re_enable = disable_interrupts (); - - reset_5xx_watchdog ((immap_t *) CONFIG_SYS_IMMR); - if (re_enable) - enable_interrupts (); -} - -/* - * Will clear software reset - */ -void reset_5xx_watchdog (volatile immap_t * immr) -{ - /* Use the MPC5xx Internal Watchdog */ - immr->im_siu_conf.sc_swsr = 0x556c; /* Prevent SW time-out */ - immr->im_siu_conf.sc_swsr = 0xaa39; -} - -#endif /* CONFIG_WATCHDOG */ - - -/* - * Get timebase clock frequency - */ -unsigned long get_tbclk (void) -{ - volatile immap_t *immr = (volatile immap_t *) CONFIG_SYS_IMMR; - ulong oscclk, factor; - - if (immr->im_clkrst.car_sccr & SCCR_TBS) { - return (gd->cpu_clk / 16); - } - - factor = (((CONFIG_SYS_PLPRCR) & PLPRCR_MF_MSK) >> PLPRCR_MF_SHIFT) + 1; - - oscclk = gd->cpu_clk / factor; - - if ((immr->im_clkrst.car_sccr & SCCR_RTSEL) == 0 || factor > 2) { - return (oscclk / 4); - } - return (oscclk / 16); -} - -void dcache_enable (void) -{ - return; -} - -void dcache_disable (void) -{ - return; -} - -int dcache_status (void) -{ - return 0; /* always off */ -} - -/* - * Reset board - */ -int do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) -{ -#if defined(CONFIG_PATI) - volatile ulong *addr = (ulong *) CONFIG_SYS_RESET_ADDRESS; - *addr = 1; -#else - ulong addr; - - /* Interrupts off, enable reset */ - __asm__ volatile (" mtspr 81, %r0 \n\t" - " mfmsr %r3 \n\t" - " rlwinm %r31,%r3,0,25,23\n\t" - " mtmsr %r31 \n\t"); - /* - * Trying to execute the next instruction at a non-existing address - * should cause a machine check, resulting in reset - */ -#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. - * "(ulong)-1" used to be a good choice for many systems... - */ - addr = CONFIG_SYS_MONITOR_BASE - sizeof (ulong); -#endif - ((void (*) (void)) addr) (); -#endif /* #if defined(CONFIG_PATI) */ - return 1; -} |