2 * (C) Copyright 2007-2010 DENX Software Engineering
3 * Copyright (C) 2004-2006 Freescale Semiconductor, Inc.
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 MPC512x family.
27 * Derived from the MPC83xx code.
34 #include <asm/processor.h>
37 #if defined(CONFIG_OF_LIBFDT)
38 #include <fdt_support.h>
41 DECLARE_GLOBAL_DATA_PTR;
45 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
46 ulong clock = gd->cpu_clk;
48 u32 spridr = in_be32(&immr->sysconf.spridr);
49 char buf1[32], buf2[32];
53 switch (spridr & 0xffff0000) {
58 printf ("Unknown part ID %08x ", spridr & 0xffff0000);
60 printf ("rev. %d.%d, Core ", SVR_MJREV (spridr), SVR_MNREV (spridr));
62 switch (pvr & 0xffff0000) {
69 printf ("at %s MHz, CSB at %s MHz (RSR=0x%04lx)\n",
71 strmhz(buf2, gd->csb_clk),
72 gd->reset_status & 0xffff);
78 do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
81 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
83 /* Interrupts and MMU off */
84 __asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
86 msr &= ~( MSR_EE | MSR_IR | MSR_DR);
87 __asm__ __volatile__ ("mtmsr %0"::"r" (msr));
90 * Enable Reset Control Reg - "RSTE" is the magic word that let us go
92 out_be32(&immap->reset.rpr, 0x52535445);
94 /* Verify Reset Control Reg is enabled */
95 while (!(in_be32(&immap->reset.rcer) & RCER_CRE))
98 printf ("Resetting the board.\n");
102 out_be32(&immap->reset.rcr, RCR_SWHR);
110 * Get timebase clock frequency (like cpu_clk in Hz)
112 unsigned long get_tbclk (void)
116 tbclk = (gd->bus_clk + 3L) / 4L;
122 #if defined(CONFIG_WATCHDOG)
123 void watchdog_reset (void)
125 int re_enable = disable_interrupts ();
128 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
129 out_be32(&immr->wdt.swsrr, 0x556c);
130 out_be32(&immr->wdt.swsrr, 0xaa39);
133 enable_interrupts ();
137 #ifdef CONFIG_OF_LIBFDT
139 #ifdef CONFIG_OF_SUPPORT_OLD_DEVICE_TREES
141 * fdt setup for old device trees
147 static void old_ft_cpu_setup(void *blob, bd_t *bd)
150 * avoid fixing up by path because that
151 * produces scary error messages
156 * old device trees have ethernet nodes with
157 * device_type = "network"
159 eth_getenv_enetaddr("ethaddr", enetaddr);
160 do_fixup_by_prop(blob, "device_type", "network", 8,
161 "local-mac-address", enetaddr, 6, 0);
162 do_fixup_by_prop(blob, "device_type", "network", 8,
163 "address", enetaddr, 6, 0);
165 * old device trees have soc nodes with
166 * device_type = "soc"
168 do_fixup_by_prop_u32(blob, "device_type", "soc", 4,
169 "bus-frequency", bd->bi_ipsfreq, 0);
173 static void ft_clock_setup(void *blob, bd_t *bd)
175 char *cpu_path = "/cpus/" OF_CPU;
178 * fixup cpu clocks using path
180 do_fixup_by_path_u32(blob, cpu_path,
181 "timebase-frequency", OF_TBCLK, 1);
182 do_fixup_by_path_u32(blob, cpu_path,
183 "bus-frequency", bd->bi_busfreq, 1);
184 do_fixup_by_path_u32(blob, cpu_path,
185 "clock-frequency", bd->bi_intfreq, 1);
187 * fixup soc clocks using compatible
189 do_fixup_by_compat_u32(blob, OF_SOC_COMPAT,
190 "bus-frequency", bd->bi_ipsfreq, 1);
193 void ft_cpu_setup(void *blob, bd_t *bd)
195 #ifdef CONFIG_OF_SUPPORT_OLD_DEVICE_TREES
196 old_ft_cpu_setup(blob, bd);
198 ft_clock_setup(blob, bd);
199 #ifdef CONFIG_HAS_ETH0
200 fdt_fixup_ethernet(blob);
202 fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
206 #ifdef CONFIG_MPC512x_FEC
207 /* Default initializations for FEC controllers. To override,
208 * create a board-specific function called:
209 * int board_eth_init(bd_t *bis)
212 int cpu_eth_init(bd_t *bis)
214 return mpc512x_fec_initialize(bis);