1 files changed, 265 insertions, 0 deletions
diff --git a/board/mpc8540ads/mpc8540ads.c b/board/mpc8540ads/mpc8540ads.c
new file mode 100644
index 0000000..c21cd9e
--- /dev/null
+++ b/board/mpc8540ads/mpc8540ads.c
@@ -0,0 +1,265 @@
+/*
+ * (C) Copyright 2002,2003, Motorola Inc.
+ * Xianghua Xiao, (X.Xiao@motorola.com)
+ *
+ * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
+ *
+ * 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
+ */
+
+
+extern long int spd_sdram (void);
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/immap_85xx.h>
+#include <spd.h>
+
+long int fixed_sdram (void);
+
+/* MPC8540ADS Board Status & Control Registers */
+#if 0
+typedef struct bscr_ {
+	unsigned long bcsr0;
+	unsigned long bcsr1;
+	unsigned long bcsr2;
+	unsigned long bcsr3;
+	unsigned long bcsr4;
+	unsigned long bcsr5;
+	unsigned long bcsr6;
+	unsigned long bcsr7;
+} bcsr_t;
+#endif
+
+int board_pre_init (void)
+{
+#if defined(CONFIG_PCI)
+    volatile immap_t *immr = (immap_t *)CFG_IMMR;
+    volatile ccsr_pcix_t *pci = &immr->im_pcix;
+
+    pci->peer &= 0xffffffdf; /* disable master abort */
+#endif
+	return 0;
+}
+
+int checkboard (void)
+{
+	sys_info_t sysinfo;
+
+	get_sys_info (&sysinfo);
+
+	printf ("Board: Motorola MPC8540ADS Board\n");
+	printf ("\tCPU: %lu MHz\n", sysinfo.freqProcessor / 1000000);
+	printf ("\tCCB: %lu MHz\n", sysinfo.freqSystemBus / 1000000);
+	printf ("\tDDR: %lu MHz\n", sysinfo.freqSystemBus / 2000000);
+	if((CFG_LBC_LCRR & 0x0f) == 2 || (CFG_LBC_LCRR & 0x0f) == 4 \
+		|| (CFG_LBC_LCRR & 0x0f) == 8) {
+		printf ("\tLBC: %lu MHz\n", sysinfo.freqSystemBus / 1000000 /(CFG_LBC_LCRR & 0x0f));
+	} else {
+		printf("\tLBC: unknown\n");
+	}
+	printf("L1 D-cache 32KB, L1 I-cache 32KB enabled.\n");
+	return (0);
+}
+
+long int initdram (int board_type)
+{
+	long dram_size = 0;
+	extern long spd_sdram (void);
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+#if !defined(CONFIG_RAM_AS_FLASH)
+	volatile ccsr_lbc_t *lbc= &immap->im_lbc;
+	sys_info_t sysinfo;
+	uint temp_lbcdll = 0;
+#endif
+#if !defined(CONFIG_RAM_AS_FLASH) || defined(CONFIG_DDR_DLL)
+	volatile ccsr_gur_t *gur= &immap->im_gur;
+#endif
+#if defined(CONFIG_DDR_DLL)
+	uint temp_ddrdll = 0;
+
+	/* Work around to stabilize DDR DLL */
+	temp_ddrdll = gur->ddrdllcr;
+	gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000;
+	asm("sync;isync;msync");
+#endif
+
+#if defined(CONFIG_SPD_EEPROM)
+	dram_size = spd_sdram ();
+#else
+	dram_size = fixed_sdram ();
+#endif
+
+#if !defined(CONFIG_RAM_AS_FLASH) /* LocalBus is not emulating flash */
+	get_sys_info(&sysinfo);
+	/* if localbus freq is less than 66Mhz,we use bypass mode,otherwise use DLL */
+	if(sysinfo.freqSystemBus/(CFG_LBC_LCRR & 0x0f) < 66000000) {
+		lbc->lcrr = (CFG_LBC_LCRR & 0x0fffffff)| 0x80000000;
+	} else {
+#if defined(CONFIG_MPC85xx_REV1) /* need change CLKDIV before enable DLL */
+		lbc->lcrr = 0x10000004; /* default CLKDIV is 8, change it to 4 temporarily */
+#endif
+		lbc->lcrr = CFG_LBC_LCRR & 0x7fffffff;
+		udelay(200);
+		temp_lbcdll = gur->lbcdllcr;
+		gur->lbcdllcr = ((temp_lbcdll & 0xff) << 16 ) | 0x80000000;
+		asm("sync;isync;msync");
+	}
+	lbc->or2 = CFG_OR2_PRELIM; /* 64MB SDRAM */
+	lbc->br2 = CFG_BR2_PRELIM;
+	lbc->lbcr = CFG_LBC_LBCR;
+	lbc->lsdmr = CFG_LBC_LSDMR_1;
+	asm("sync");
+	(unsigned int) * (ulong *)0 = 0x000000ff;
+	lbc->lsdmr = CFG_LBC_LSDMR_2;
+	asm("sync");
+	(unsigned int) * (ulong *)0 = 0x000000ff;
+	lbc->lsdmr = CFG_LBC_LSDMR_3;
+	asm("sync");
+	(unsigned int) * (ulong *)0 = 0x000000ff;
+	lbc->lsdmr = CFG_LBC_LSDMR_4;
+	asm("sync");
+	(unsigned int) * (ulong *)0 = 0x000000ff;
+	lbc->lsdmr = CFG_LBC_LSDMR_5;
+	asm("sync");
+	lbc->lsrt = CFG_LBC_LSRT;
+	asm("sync");
+	lbc->mrtpr = CFG_LBC_MRTPR;
+	asm("sync");
+#endif
+
+#if defined(CONFIG_DDR_ECC)
+	{
+		/* Initialize all of memory for ECC, then
+		 * enable errors */
+		uint *p = 0;
+		uint i = 0;
+		volatile immap_t *immap = (immap_t *)CFG_IMMR;
+		volatile ccsr_ddr_t *ddr= &immap->im_ddr;
+		dma_init();
+		for (*p = 0; p < (uint *)(8 * 1024); p++) {
+			if (((unsigned int)p & 0x1f) == 0) { dcbz(p); }
+			*p = (unsigned int)0xdeadbeef;
+			if (((unsigned int)p & 0x1c) == 0x1c) { dcbf(p); }
+		}
+
+		/* 8K */
+		dma_xfer((uint *)0x2000,0x2000,(uint *)0);
+		/* 16K */
+		dma_xfer((uint *)0x4000,0x4000,(uint *)0);
+		/* 32K */
+		dma_xfer((uint *)0x8000,0x8000,(uint *)0);
+		/* 64K */
+		dma_xfer((uint *)0x10000,0x10000,(uint *)0);
+		/* 128k */
+		dma_xfer((uint *)0x20000,0x20000,(uint *)0);
+		/* 256k */
+		dma_xfer((uint *)0x40000,0x40000,(uint *)0);
+		/* 512k */
+		dma_xfer((uint *)0x80000,0x80000,(uint *)0);
+		/* 1M */
+		dma_xfer((uint *)0x100000,0x100000,(uint *)0);
+		/* 2M */
+		dma_xfer((uint *)0x200000,0x200000,(uint *)0);
+		/* 4M */
+		dma_xfer((uint *)0x400000,0x400000,(uint *)0);
+
+		for (i = 1; i < dram_size / 0x800000; i++) {
+			dma_xfer((uint *)(0x800000*i),0x800000,(uint *)0);
+		}
+
+		/* Enable errors for ECC */
+		ddr->err_disable = 0x00000000;
+		asm("sync;isync;msync");
+	}
+#endif
+
+	return dram_size;
+}
+
+
+#if defined(CFG_DRAM_TEST)
+int testdram (void)
+{
+	uint *pstart = (uint *) CFG_MEMTEST_START;
+	uint *pend = (uint *) CFG_MEMTEST_END;
+	uint *p;
+
+	printf("SDRAM test phase 1:\n");
+	for (p = pstart; p < pend; p++)
+		*p = 0xaaaaaaaa;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0xaaaaaaaa) {
+			printf ("SDRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+
+	printf("SDRAM test phase 2:\n");
+	for (p = pstart; p < pend; p++)
+		*p = 0x55555555;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0x55555555) {
+			printf ("SDRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+
+	printf("SDRAM test passed.\n");
+	return 0;
+}
+#endif
+
+
+#if !defined(CONFIG_SPD_EEPROM)
+/*************************************************************************
+ *  fixed sdram init -- doesn't use serial presence detect.
+ ************************************************************************/
+long int fixed_sdram (void)
+{
+  #ifndef CFG_RAMBOOT
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	volatile ccsr_ddr_t *ddr= &immap->im_ddr;
+
+	ddr->cs0_bnds = CFG_DDR_CS0_BNDS;
+	ddr->cs0_config = CFG_DDR_CS0_CONFIG;
+	ddr->timing_cfg_1 = CFG_DDR_TIMING_1;
+	ddr->timing_cfg_2 = CFG_DDR_TIMING_2;
+	ddr->sdram_mode = CFG_DDR_MODE;
+	ddr->sdram_interval = CFG_DDR_INTERVAL;
+    #if defined (CONFIG_DDR_ECC)
+	ddr->err_disable = 0x0000000D;
+	ddr->err_sbe = 0x00ff0000;
+    #endif
+	asm("sync;isync;msync");
+	udelay(500);
+    #if defined (CONFIG_DDR_ECC)
+	/* Enable ECC checking */
+	ddr->sdram_cfg = (CFG_DDR_CONTROL | 0x20000000);
+    #else
+	ddr->sdram_cfg = CFG_DDR_CONTROL;
+    #endif
+	asm("sync; isync; msync");
+	udelay(500);
+  #endif
+	return (CFG_SDRAM_SIZE * 1024 * 1024);
+}
+#endif	/* !defined(CONFIG_SPD_EEPROM) */