* Add support for IceCube board (with MGT5100 and MPC5200 CPUs)

* Add support for MGT5100 and MPC5200 processors

1 files changed, 185 insertions, 0 deletions

diff --git a/cpu/mpc5xxx/cpu_init.c b/cpu/mpc5xxx/cpu_init.c
new file mode 100644
index 0000000..7322027
--- /dev/null
+++ b/cpu/mpc5xxx/cpu_init.c
@@ -0,0 +1,185 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <mpc5xxx.h>
+
+#if defined(CONFIG_MGT5100)
+#define START_REG(start)	((start) >> 15)
+#define STOP_REG(start, size)	(((start) + (size) - 1) >> 15)
+#elif defined(CONFIG_MPC5200)
+#define START_REG(start)	((start) >> 16)
+#define STOP_REG(start, size)	(((start) + (size) - 1) >> 16)
+#endif
+
+/*
+ * Breath some life into the CPU...
+ *
+ * Set up the memory map,
+ * initialize a bunch of registers.
+ */
+void cpu_init_f (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	unsigned long addecr = (1 << 25); /* Boot_CS */
+#if defined(CFG_RAMBOOT) && defined(CONFIG_MGT5100)
+	addecr |= (1 << 22); /* SDRAM enable */
+#endif
+	/* Pointer is writable since we allocated a register for it */
+	gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
+
+	/* Clear initial global data */
+	memset ((void *) gd, 0, sizeof (gd_t));
+
+	/*
+	 * Memory Controller: configure chip selects and enable them
+	 */
+#if defined(CFG_BOOTCS_START) && defined(CFG_BOOTCS_SIZE)
+	*(vu_long *)MPC5XXX_BOOTCS_START = START_REG(CFG_BOOTCS_START);
+	*(vu_long *)MPC5XXX_BOOTCS_STOP = STOP_REG(CFG_BOOTCS_START,
+			CFG_BOOTCS_SIZE);
+#endif
+#if defined(CFG_BOOTCS_CFG)
+	*(vu_long *)MPC5XXX_BOOTCS_CFG = CFG_BOOTCS_CFG;
+#endif
+
+#if defined(CFG_CS0_START) && defined(CFG_CS0_SIZE)
+	*(vu_long *)MPC5XXX_CS0_START = START_REG(CFG_CS0_START);
+	*(vu_long *)MPC5XXX_CS0_STOP = STOP_REG(CFG_CS0_START, CFG_CS0_SIZE);
+	/* CS0 and BOOT_CS cannot be enabled at once. */
+	/*	addecr |= (1 << 16); */
+#endif
+#if defined(CFG_CS0_CFG)
+	*(vu_long *)MPC5XXX_CS0_CFG = CFG_CS0_CFG;
+#endif
+
+#if defined(CFG_CS1_START) && defined(CFG_CS1_SIZE)
+	*(vu_long *)MPC5XXX_CS1_START = START_REG(CFG_CS1_START);
+	*(vu_long *)MPC5XXX_CS1_STOP = STOP_REG(CFG_CS1_START, CFG_CS1_SIZE);
+	addecr |= (1 << 17);
+#endif
+#if defined(CFG_CS1_CFG)
+	*(vu_long *)MPC5XXX_CS1_CFG = CFG_CS1_CFG;
+#endif
+
+#if defined(CFG_CS2_START) && defined(CFG_CS2_SIZE)
+	*(vu_long *)MPC5XXX_CS2_START = START_REG(CFG_CS2_START);
+	*(vu_long *)MPC5XXX_CS2_STOP = STOP_REG(CFG_CS2_START, CFG_CS2_SIZE);
+	addecr |= (1 << 18);
+#endif
+#if defined(CFG_CS2_CFG)
+	*(vu_long *)MPC5XXX_CS2_CFG = CFG_CS2_CFG;
+#endif
+
+#if defined(CFG_CS3_START) && defined(CFG_CS3_SIZE)
+	*(vu_long *)MPC5XXX_CS3_START = START_REG(CFG_CS3_START);
+	*(vu_long *)MPC5XXX_CS3_STOP = STOP_REG(CFG_CS3_START, CFG_CS3_SIZE);
+	addecr |= (1 << 19);
+#endif
+#if defined(CFG_CS3_CFG)
+	*(vu_long *)MPC5XXX_CS3_CFG = CFG_CS3_CFG;
+#endif
+
+#if defined(CFG_CS4_START) && defined(CFG_CS4_SIZE)
+	*(vu_long *)MPC5XXX_CS4_START = START_REG(CFG_CS4_START);
+	*(vu_long *)MPC5XXX_CS4_STOP = STOP_REG(CFG_CS4_START, CFG_CS4_SIZE);
+	addecr |= (1 << 20);
+#endif
+#if defined(CFG_CS4_CFG)
+	*(vu_long *)MPC5XXX_CS4_CFG = CFG_CS4_CFG;
+#endif
+
+#if defined(CFG_CS5_START) && defined(CFG_CS5_SIZE)
+	*(vu_long *)MPC5XXX_CS5_START = START_REG(CFG_CS5_START);
+	*(vu_long *)MPC5XXX_CS5_STOP = STOP_REG(CFG_CS5_START, CFG_CS5_SIZE);
+	addecr |= (1 << 21);
+#endif
+#if defined(CFG_CS5_CFG)
+	*(vu_long *)MPC5XXX_CS5_CFG = CFG_CS5_CFG;
+#endif
+
+#if defined(CONFIG_MPC5200)
+	addecr |= 1;
+#if defined(CFG_CS6_START) && defined(CFG_CS6_SIZE)
+	*(vu_long *)MPC5XXX_CS6_START = START_REG(CFG_CS6_START);
+	*(vu_long *)MPC5XXX_CS6_STOP = STOP_REG(CFG_CS6_START, CFG_CS6_SIZE);
+	addecr |= (1 << 26);
+#endif
+#if defined(CFG_CS6_CFG)
+	*(vu_long *)MPC5XXX_CS6_CFG = CFG_CS6_CFG;
+#endif
+
+#if defined(CFG_CS7_START) && defined(CFG_CS7_SIZE)
+	*(vu_long *)MPC5XXX_CS7_START = START_REG(CFG_CS5_START);
+	*(vu_long *)MPC5XXX_CS7_STOP = STOP_REG(CFG_CS7_START, CFG_CS7_SIZE);
+	addecr |= (1 << 27);
+#endif
+#if defined(CFG_CS7_CFG)
+	*(vu_long *)MPC5XXX_CS7_CFG = CFG_CS7_CFG;
+#endif
+
+#if defined(CFG_CS_BURST)
+	*(vu_long *)MPC5XXX_CS_BURST = CFG_CS_BURST;
+#endif
+#if defined(CFG_CS_DEADCYCLE)
+	*(vu_long *)MPC5XXX_CS_DEADCYCLE = CFG_CS_DEADCYCLE;
+#endif
+#endif /* CONFIG_MPC5200 */
+
+	/* Enable chip selects */
+	*(vu_long *)MPC5XXX_ADDECR = addecr;
+	*(vu_long *)MPC5XXX_CS_CTRL = (1 << 24);
+
+	/* Setup pin multiplexing */
+#if defined(CFG_GPS_PORT_CONFIG)
+	*(vu_long *)MPC5XXX_GPS_PORT_CONFIG = CFG_GPS_PORT_CONFIG;
+#endif
+}
+
+/*
+ * initialize higher level parts of CPU like time base and timers
+ */
+int cpu_init_r (void)
+{
+	/* mask all interrupts */
+#if defined(CONFIG_MGT5100)
+	*(vu_long *)MPC5XXX_ICTL_PER_MASK = 0xfffffc00;
+#elif defined(CONFIG_MPC5200)
+	*(vu_long *)MPC5XXX_ICTL_PER_MASK = 0xffffff00;
+#endif
+	*(vu_long *)MPC5XXX_ICTL_CRIT |= 0x0001ffff;
+	*(vu_long *)MPC5XXX_ICTL_EXT &= ~0x00000f00;
+
+#if defined(CONFIG_MPC5200)
+	/* enable timebase */
+	*(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 13);
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_MPC5XXX_FEC)
+	/* load FEC microcode */
+	loadtask(0, 2);
+#endif
+
+	return (0);
+}