2 * (C) Copyright 2000-2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * CPU specific code for the MPC5xxx CPUs
34 #include <asm/processor.h>
36 #if defined(CONFIG_OF_LIBFDT)
38 #include <libfdt_env.h>
39 #include <fdt_support.h>
42 DECLARE_GLOBAL_DATA_PTR;
46 ulong clock = gd->cpu_clk;
48 #ifndef CONFIG_MGT5100
56 printf (" (JTAG ID %08lx)", *(vu_long *)MPC5XXX_CDM_JTAGID);
69 printf("Unknown MPC5xxx");
73 printf (" v%d.%d, Core v%d.%d", SVR_MJREV (svr), SVR_MNREV (svr),
74 PVR_MAJ(pvr), PVR_MIN(pvr));
76 printf (" at %s MHz\n", strmhz (buf, clock));
80 /* ------------------------------------------------------------------------- */
83 do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
86 /* Interrupts and MMU off */
87 __asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
89 msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
90 __asm__ __volatile__ ("mtmsr %0"::"r" (msr));
92 /* Charge the watchdog timer */
93 *(vu_long *)(MPC5XXX_GPT0_COUNTER) = 0x0001000f;
94 *(vu_long *)(MPC5XXX_GPT0_ENABLE) = 0x9004; /* wden|ce|timer_ms */
101 /* ------------------------------------------------------------------------- */
104 * Get timebase clock frequency (like cpu_clk in Hz)
107 unsigned long get_tbclk (void)
111 tbclk = (gd->bus_clk + 3L) / 4L;
116 /* ------------------------------------------------------------------------- */
118 #if defined(CONFIG_OF_LIBFDT) && defined (CONFIG_OF_BOARD_SETUP)
119 void ft_cpu_setup(void *blob, bd_t *bd)
121 int div = in_8((void*)CFG_MBAR + 0x204) & 0x0020 ? 8 : 4;
122 char * cpu_path = "/cpus/" OF_CPU;
123 #ifdef CONFIG_MPC5xxx_FEC
124 char * eth_path = "/" OF_SOC "/ethernet@3000";
127 do_fixup_by_path_u32(blob, cpu_path, "timebase-frequency", OF_TBCLK, 1);
128 do_fixup_by_path_u32(blob, cpu_path, "bus-frequency", bd->bi_busfreq, 1);
129 do_fixup_by_path_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
130 do_fixup_by_path_u32(blob, "/" OF_SOC, "bus-frequency", bd->bi_ipbfreq, 1);
131 do_fixup_by_path_u32(blob, "/" OF_SOC, "system-frequency",
132 bd->bi_busfreq*div, 1);
133 #ifdef CONFIG_MPC5xxx_FEC
134 do_fixup_by_path(blob, eth_path, "mac-address", bd->bi_enetaddr, 6, 0);
135 do_fixup_by_path(blob, eth_path, "local-mac-address", bd->bi_enetaddr, 6, 0);
140 #ifdef CONFIG_BOOTCOUNT_LIMIT
142 void bootcount_store (ulong a)
144 volatile ulong *save_addr = (volatile ulong *) (MPC5XXX_CDM_BRDCRMB);
146 *save_addr = (BOOTCOUNT_MAGIC & 0xffff0000) | a;
149 ulong bootcount_load (void)
151 volatile ulong *save_addr = (volatile ulong *) (MPC5XXX_CDM_BRDCRMB);
153 if ((*save_addr & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000))
156 return (*save_addr & 0x0000ffff);
158 #endif /* CONFIG_BOOTCOUNT_LIMIT */
160 #ifdef CONFIG_MPC5xxx_FEC
161 /* Default initializations for FEC controllers. To override,
162 * create a board-specific function called:
163 * int board_eth_init(bd_t *bis)
166 int cpu_eth_init(bd_t *bis)
168 return mpc5xxx_fec_initialize(bis);