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,
27 DECLARE_GLOBAL_DATA_PTR;
30 * Breath some life into the CPU...
32 * Set up the memory map,
33 * initialize a bunch of registers.
35 void cpu_init_f (void)
37 unsigned long addecr = (1 << 25); /* Boot_CS */
38 #if defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_MGT5100)
39 addecr |= (1 << 22); /* SDRAM enable */
41 /* Pointer is writable since we allocated a register for it */
42 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
44 /* Clear initial global data */
45 memset ((void *) gd, 0, sizeof (gd_t));
48 * Memory Controller: configure chip selects and enable them
50 #if defined(CONFIG_SYS_BOOTCS_START) && defined(CONFIG_SYS_BOOTCS_SIZE)
51 *(vu_long *)MPC5XXX_BOOTCS_START = START_REG(CONFIG_SYS_BOOTCS_START);
52 *(vu_long *)MPC5XXX_BOOTCS_STOP = STOP_REG(CONFIG_SYS_BOOTCS_START,
53 CONFIG_SYS_BOOTCS_SIZE);
55 #if defined(CONFIG_SYS_BOOTCS_CFG)
56 *(vu_long *)MPC5XXX_BOOTCS_CFG = CONFIG_SYS_BOOTCS_CFG;
59 #if defined(CONFIG_SYS_CS0_START) && defined(CONFIG_SYS_CS0_SIZE)
60 *(vu_long *)MPC5XXX_CS0_START = START_REG(CONFIG_SYS_CS0_START);
61 *(vu_long *)MPC5XXX_CS0_STOP = STOP_REG(CONFIG_SYS_CS0_START, CONFIG_SYS_CS0_SIZE);
62 /* CS0 and BOOT_CS cannot be enabled at once. */
63 /* addecr |= (1 << 16); */
65 #if defined(CONFIG_SYS_CS0_CFG)
66 *(vu_long *)MPC5XXX_CS0_CFG = CONFIG_SYS_CS0_CFG;
69 #if defined(CONFIG_SYS_CS1_START) && defined(CONFIG_SYS_CS1_SIZE)
70 *(vu_long *)MPC5XXX_CS1_START = START_REG(CONFIG_SYS_CS1_START);
71 *(vu_long *)MPC5XXX_CS1_STOP = STOP_REG(CONFIG_SYS_CS1_START, CONFIG_SYS_CS1_SIZE);
74 #if defined(CONFIG_SYS_CS1_CFG)
75 *(vu_long *)MPC5XXX_CS1_CFG = CONFIG_SYS_CS1_CFG;
78 #if defined(CONFIG_SYS_CS2_START) && defined(CONFIG_SYS_CS2_SIZE)
79 *(vu_long *)MPC5XXX_CS2_START = START_REG(CONFIG_SYS_CS2_START);
80 *(vu_long *)MPC5XXX_CS2_STOP = STOP_REG(CONFIG_SYS_CS2_START, CONFIG_SYS_CS2_SIZE);
83 #if defined(CONFIG_SYS_CS2_CFG)
84 *(vu_long *)MPC5XXX_CS2_CFG = CONFIG_SYS_CS2_CFG;
87 #if defined(CONFIG_SYS_CS3_START) && defined(CONFIG_SYS_CS3_SIZE)
88 *(vu_long *)MPC5XXX_CS3_START = START_REG(CONFIG_SYS_CS3_START);
89 *(vu_long *)MPC5XXX_CS3_STOP = STOP_REG(CONFIG_SYS_CS3_START, CONFIG_SYS_CS3_SIZE);
92 #if defined(CONFIG_SYS_CS3_CFG)
93 *(vu_long *)MPC5XXX_CS3_CFG = CONFIG_SYS_CS3_CFG;
96 #if defined(CONFIG_SYS_CS4_START) && defined(CONFIG_SYS_CS4_SIZE)
97 *(vu_long *)MPC5XXX_CS4_START = START_REG(CONFIG_SYS_CS4_START);
98 *(vu_long *)MPC5XXX_CS4_STOP = STOP_REG(CONFIG_SYS_CS4_START, CONFIG_SYS_CS4_SIZE);
101 #if defined(CONFIG_SYS_CS4_CFG)
102 *(vu_long *)MPC5XXX_CS4_CFG = CONFIG_SYS_CS4_CFG;
105 #if defined(CONFIG_SYS_CS5_START) && defined(CONFIG_SYS_CS5_SIZE)
106 *(vu_long *)MPC5XXX_CS5_START = START_REG(CONFIG_SYS_CS5_START);
107 *(vu_long *)MPC5XXX_CS5_STOP = STOP_REG(CONFIG_SYS_CS5_START, CONFIG_SYS_CS5_SIZE);
110 #if defined(CONFIG_SYS_CS5_CFG)
111 *(vu_long *)MPC5XXX_CS5_CFG = CONFIG_SYS_CS5_CFG;
114 #if defined(CONFIG_MPC5200)
116 #if defined(CONFIG_SYS_CS6_START) && defined(CONFIG_SYS_CS6_SIZE)
117 *(vu_long *)MPC5XXX_CS6_START = START_REG(CONFIG_SYS_CS6_START);
118 *(vu_long *)MPC5XXX_CS6_STOP = STOP_REG(CONFIG_SYS_CS6_START, CONFIG_SYS_CS6_SIZE);
121 #if defined(CONFIG_SYS_CS6_CFG)
122 *(vu_long *)MPC5XXX_CS6_CFG = CONFIG_SYS_CS6_CFG;
125 #if defined(CONFIG_SYS_CS7_START) && defined(CONFIG_SYS_CS7_SIZE)
126 *(vu_long *)MPC5XXX_CS7_START = START_REG(CONFIG_SYS_CS7_START);
127 *(vu_long *)MPC5XXX_CS7_STOP = STOP_REG(CONFIG_SYS_CS7_START, CONFIG_SYS_CS7_SIZE);
130 #if defined(CONFIG_SYS_CS7_CFG)
131 *(vu_long *)MPC5XXX_CS7_CFG = CONFIG_SYS_CS7_CFG;
134 #if defined(CONFIG_SYS_CS_BURST)
135 *(vu_long *)MPC5XXX_CS_BURST = CONFIG_SYS_CS_BURST;
137 #if defined(CONFIG_SYS_CS_DEADCYCLE)
138 *(vu_long *)MPC5XXX_CS_DEADCYCLE = CONFIG_SYS_CS_DEADCYCLE;
140 #endif /* CONFIG_MPC5200 */
142 /* Enable chip selects */
143 *(vu_long *)MPC5XXX_ADDECR = addecr;
144 *(vu_long *)MPC5XXX_CS_CTRL = (1 << 24);
146 /* Setup pin multiplexing */
147 #if defined(CONFIG_SYS_GPS_PORT_CONFIG)
148 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG = CONFIG_SYS_GPS_PORT_CONFIG;
151 #if defined(CONFIG_MPC5200)
152 /* enable timebase */
153 *(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 13);
155 /* Enable snooping for RAM */
156 *(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 15);
157 *(vu_long *)(MPC5XXX_XLBARB + 0x70) = CONFIG_SYS_SDRAM_BASE | 0x1d;
159 # if defined(CONFIG_SYS_IPBCLK_EQUALS_XLBCLK)
160 /* Motorola reports IPB should better run at 133 MHz. */
161 *(vu_long *)MPC5XXX_ADDECR |= 1;
162 /* pci_clk_sel = 0x02, ipb_clk_sel = 0x00; */
163 addecr = *(vu_long *)MPC5XXX_CDM_CFG;
165 # if defined(CONFIG_SYS_PCICLK_EQUALS_IPBCLK_DIV2)
166 /* pci_clk_sel = 0x01 -> IPB_CLK/2 */
169 /* pci_clk_sel = 0x02 -> XLB_CLK/4 = IPB_CLK/4 */
171 # endif /* CONFIG_SYS_PCICLK_EQUALS_IPBCLK_DIV2 */
172 *(vu_long *)MPC5XXX_CDM_CFG = addecr;
173 # endif /* CONFIG_SYS_IPBCLK_EQUALS_XLBCLK */
174 /* Configure the XLB Arbiter */
175 *(vu_long *)MPC5XXX_XLBARB_MPRIEN = 0xff;
176 *(vu_long *)MPC5XXX_XLBARB_MPRIVAL = 0x11111111;
178 # if defined(CONFIG_SYS_XLB_PIPELINING)
179 /* Enable piplining */
180 *(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~(1 << 31);
182 #endif /* CONFIG_MPC5200 */
186 * initialize higher level parts of CPU like time base and timers
188 int cpu_init_r (void)
190 /* mask all interrupts */
191 #if defined(CONFIG_MGT5100)
192 *(vu_long *)MPC5XXX_ICTL_PER_MASK = 0xfffffc00;
193 #elif defined(CONFIG_MPC5200)
194 *(vu_long *)MPC5XXX_ICTL_PER_MASK = 0xffffff00;
196 *(vu_long *)MPC5XXX_ICTL_CRIT |= 0x0001ffff;
197 *(vu_long *)MPC5XXX_ICTL_EXT &= ~0x00000f00;
198 /* route critical ints to normal ints */
199 *(vu_long *)MPC5XXX_ICTL_EXT |= 0x00000001;
201 #if defined(CONFIG_CMD_NET) && defined(CONFIG_MPC5xxx_FEC)
202 /* load FEC microcode */