1 files changed, 334 insertions, 0 deletions
diff --git a/arch/ppc/cpu/mpc83xx/cpu.c b/arch/ppc/cpu/mpc83xx/cpu.c
new file mode 100644
index 0000000..51180d6
--- /dev/null
+++ b/arch/ppc/cpu/mpc83xx/cpu.c
@@ -0,0 +1,334 @@
+/*
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ *
+ * 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
+ */
+
+/*
+ * CPU specific code for the MPC83xx family.
+ *
+ * Derived from the MPC8260 and MPC85xx.
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <mpc83xx.h>
+#include <asm/processor.h>
+#include <libfdt.h>
+#include <tsec.h>
+#include <netdev.h>
+#include <fsl_esdhc.h>
+#ifdef CONFIG_BOOTCOUNT_LIMIT
+#include <asm/immap_qe.h>
+#include <asm/io.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkcpu(void)
+{
+	volatile immap_t *immr;
+	ulong clock = gd->cpu_clk;
+	u32 pvr = get_pvr();
+	u32 spridr;
+	char buf[32];
+	int i;
+
+	const struct cpu_type {
+		char name[15];
+		u32 partid;
+	} cpu_type_list [] = {
+		CPU_TYPE_ENTRY(8311),
+		CPU_TYPE_ENTRY(8313),
+		CPU_TYPE_ENTRY(8314),
+		CPU_TYPE_ENTRY(8315),
+		CPU_TYPE_ENTRY(8321),
+		CPU_TYPE_ENTRY(8323),
+		CPU_TYPE_ENTRY(8343),
+		CPU_TYPE_ENTRY(8347_TBGA_),
+		CPU_TYPE_ENTRY(8347_PBGA_),
+		CPU_TYPE_ENTRY(8349),
+		CPU_TYPE_ENTRY(8358_TBGA_),
+		CPU_TYPE_ENTRY(8358_PBGA_),
+		CPU_TYPE_ENTRY(8360),
+		CPU_TYPE_ENTRY(8377),
+		CPU_TYPE_ENTRY(8378),
+		CPU_TYPE_ENTRY(8379),
+	};
+
+	immr = (immap_t *)CONFIG_SYS_IMMR;
+
+	puts("CPU:   ");
+
+	switch (pvr & 0xffff0000) {
+		case PVR_E300C1:
+			printf("e300c1, ");
+			break;
+
+		case PVR_E300C2:
+			printf("e300c2, ");
+			break;
+
+		case PVR_E300C3:
+			printf("e300c3, ");
+			break;
+
+		case PVR_E300C4:
+			printf("e300c4, ");
+			break;
+
+		default:
+			printf("Unknown core, ");
+	}
+
+	spridr = immr->sysconf.spridr;
+
+	for (i = 0; i < ARRAY_SIZE(cpu_type_list); i++)
+		if (cpu_type_list[i].partid == PARTID_NO_E(spridr)) {
+			puts("MPC");
+			puts(cpu_type_list[i].name);
+			if (IS_E_PROCESSOR(spridr))
+				puts("E");
+			if (REVID_MAJOR(spridr) >= 2)
+				puts("A");
+			printf(", Rev: %d.%d", REVID_MAJOR(spridr),
+			       REVID_MINOR(spridr));
+			break;
+		}
+
+	if (i == ARRAY_SIZE(cpu_type_list))
+		printf("(SPRIDR %08x unknown), ", spridr);
+
+	printf(" at %s MHz, ", strmhz(buf, clock));
+
+	printf("CSB: %s MHz\n", strmhz(buf, gd->csb_clk));
+
+	return 0;
+}
+
+
+/*
+ * Program a UPM with the code supplied in the table.
+ *
+ * The 'dummy' variable is used to increment the MAD. 'dummy' is
+ * supposed to be a pointer to the memory of the device being
+ * programmed by the UPM.  The data in the MDR is written into
+ * memory and the MAD is incremented every time there's a write
+ * to 'dummy'. Unfortunately, the current prototype for this
+ * function doesn't allow for passing the address of this
+ * device, and changing the prototype will break a number lots
+ * of other code, so we need to use a round-about way of finding
+ * the value for 'dummy'.
+ *
+ * The value can be extracted from the base address bits of the
+ * Base Register (BR) associated with the specific UPM.  To find
+ * that BR, we need to scan all 8 BRs until we find the one that
+ * has its MSEL bits matching the UPM we want.  Once we know the
+ * right BR, we can extract the base address bits from it.
+ *
+ * The MxMR and the BR and OR of the chosen bank should all be
+ * configured before calling this function.
+ *
+ * Parameters:
+ * upm: 0=UPMA, 1=UPMB, 2=UPMC
+ * table: Pointer to an array of values to program
+ * size: Number of elements in the array.  Must be 64 or less.
+ */
+void upmconfig (uint upm, uint *table, uint size)
+{
+	volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
+	volatile fsl_lbus_t *lbus = &immap->lbus;
+	volatile uchar *dummy = NULL;
+	const u32 msel = (upm + 4) << BR_MSEL_SHIFT;	/* What the MSEL field in BRn should be */
+	volatile u32 *mxmr = &lbus->mamr + upm;	/* Pointer to mamr, mbmr, or mcmr */
+	uint i;
+
+	/* Scan all the banks to determine the base address of the device */
+	for (i = 0; i < 8; i++) {
+		if ((lbus->bank[i].br & BR_MSEL) == msel) {
+			dummy = (uchar *) (lbus->bank[i].br & BR_BA);
+			break;
+		}
+	}
+
+	if (!dummy) {
+		printf("Error: %s() could not find matching BR\n", __FUNCTION__);
+		hang();
+	}
+
+	/* Set the OP field in the MxMR to "write" and the MAD field to 000000 */
+	*mxmr = (*mxmr & 0xCFFFFFC0) | 0x10000000;
+
+	for (i = 0; i < size; i++) {
+		lbus->mdr = table[i];
+		__asm__ __volatile__ ("sync");
+		*dummy = 0;	/* Write the value to memory and increment MAD */
+		__asm__ __volatile__ ("sync");
+		while(((*mxmr & 0x3f) != ((i + 1) & 0x3f)));
+	}
+
+	/* Set the OP field in the MxMR to "normal" and the MAD field to 000000 */
+	*mxmr &= 0xCFFFFFC0;
+}
+
+
+int
+do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+	ulong msr;
+#ifndef MPC83xx_RESET
+	ulong addr;
+#endif
+
+	volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
+
+	puts("Resetting the board.\n");
+
+#ifdef MPC83xx_RESET
+
+	/* Interrupts and MMU off */
+	__asm__ __volatile__ ("mfmsr    %0":"=r" (msr):);
+
+	msr &= ~( MSR_EE | MSR_IR | MSR_DR);
+	__asm__ __volatile__ ("mtmsr    %0"::"r" (msr));
+
+	/* enable Reset Control Reg */
+	immap->reset.rpr = 0x52535445;
+	__asm__ __volatile__ ("sync");
+	__asm__ __volatile__ ("isync");
+
+	/* confirm Reset Control Reg is enabled */
+	while(!((immap->reset.rcer) & RCER_CRE));
+
+	udelay(200);
+
+	/* perform reset, only one bit */
+	immap->reset.rcr = RCR_SWHR;
+
+#else	/* ! MPC83xx_RESET */
+
+	immap->reset.rmr = RMR_CSRE;    /* Checkstop Reset enable */
+
+	/* Interrupts and MMU off */
+	__asm__ __volatile__ ("mfmsr    %0":"=r" (msr):);
+
+	msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
+	__asm__ __volatile__ ("mtmsr    %0"::"r" (msr));
+
+	/*
+	 * Trying to execute the next instruction at a non-existing address
+	 * should cause a machine check, resulting in reset
+	 */
+	addr = CONFIG_SYS_RESET_ADDRESS;
+
+	((void (*)(void)) addr) ();
+#endif	/* MPC83xx_RESET */
+
+	return 1;
+}
+
+
+/*
+ * Get timebase clock frequency (like cpu_clk in Hz)
+ */
+
+unsigned long get_tbclk(void)
+{
+	ulong tbclk;
+
+	tbclk = (gd->bus_clk + 3L) / 4L;
+
+	return tbclk;
+}
+
+
+#if defined(CONFIG_WATCHDOG)
+void watchdog_reset (void)
+{
+	int re_enable = disable_interrupts();
+
+	/* Reset the 83xx watchdog */
+	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+	immr->wdt.swsrr = 0x556c;
+	immr->wdt.swsrr = 0xaa39;
+
+	if (re_enable)
+		enable_interrupts ();
+}
+#endif
+
+/*
+ * Initializes on-chip ethernet controllers.
+ * to override, implement board_eth_init()
+ */
+int cpu_eth_init(bd_t *bis)
+{
+#if defined(CONFIG_UEC_ETH)
+	uec_standard_init(bis);
+#endif
+
+#if defined(CONFIG_TSEC_ENET)
+	tsec_standard_init(bis);
+#endif
+	return 0;
+}
+
+/*
+ * Initializes on-chip MMC controllers.
+ * to override, implement board_mmc_init()
+ */
+int cpu_mmc_init(bd_t *bis)
+{
+#ifdef CONFIG_FSL_ESDHC
+	return fsl_esdhc_mmc_init(bis);
+#else
+	return 0;
+#endif
+}
+
+#ifdef CONFIG_BOOTCOUNT_LIMIT
+
+#if !defined(CONFIG_MPC8360)
+#error "CONFIG_BOOTCOUNT_LIMIT only for MPC8360 implemented"
+#endif
+
+#if !defined(CONFIG_BOOTCOUNT_ADDR)
+#define CONFIG_BOOTCOUNT_ADDR	(0x110000 + QE_MURAM_SIZE - 2 * sizeof(unsigned long))
+#endif
+
+#include <asm/io.h>
+
+void bootcount_store (ulong a)
+{
+	void *reg = (void *)(CONFIG_SYS_IMMR + CONFIG_BOOTCOUNT_ADDR);
+	out_be32 (reg, a);
+	out_be32 (reg + 4, BOOTCOUNT_MAGIC);
+}
+
+ulong bootcount_load (void)
+{
+	void *reg = (void *)(CONFIG_SYS_IMMR + CONFIG_BOOTCOUNT_ADDR);
+
+	if (in_be32 (reg + 4) != BOOTCOUNT_MAGIC)
+		return 0;
+	else
+		return in_be32 (reg);
+}
+#endif /* CONFIG_BOOTCOUNT_LIMIT */