Add PPC4xx-HCU4 and HCU5 boards: HCU5 files

Signed-off-by: Niklaus Giger <niklaus.giger@netstal.com>

1 files changed, 299 insertions, 0 deletions

diff --git a/board/netstal/hcu5/sdram.c b/board/netstal/hcu5/sdram.c
new file mode 100644
index 0000000..f7d6865
--- /dev/null
+++ b/board/netstal/hcu5/sdram.c
@@ -0,0 +1,299 @@
+/*
+ * (C) Copyright 2007
+ * Niklaus Giger (Niklaus.Giger@netstal.com)
+ * (C) Copyright 2006
+ * Sylvie Gohl,             AMCC/IBM, gohl.sylvie@fr.ibm.com
+ * Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
+ * Thierry Roman,           AMCC/IBM, thierry_roman@fr.ibm.com
+ * Alain Saurel,            AMCC/IBM, alain.saurel@fr.ibm.com
+ * Robert Snyder,           AMCC/IBM, rob.snyder@fr.ibm.com
+ *
+ * (C) Copyright 2006
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * 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
+ */
+
+/* define DEBUG for debug output */
+#undef DEBUG
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/mmu.h>
+#include <ppc440.h>
+
+void sysLedSet(u32 value);
+void dcbz_area(u32 start_address, u32 num_bytes);
+void dflush(void);
+
+#define DDR_DCR_BASE 0x10
+#define ddrcfga  (DDR_DCR_BASE+0x0)   /* DDR configuration address reg */
+#define ddrcfgd  (DDR_DCR_BASE+0x1)   /* DDR configuration data reg    */
+
+#define DDR0_01_INT_MASK_MASK             0x000000FF
+#define DDR0_00_INT_ACK_ALL               0x7F000000
+#define DDR0_01_INT_MASK_ALL_ON           0x000000FF
+#define DDR0_01_INT_MASK_ALL_OFF          0x00000000
+
+#define DDR0_17_DLLLOCKREG_MASK           0x00010000 /* Read only */
+#define DDR0_17_DLLLOCKREG_UNLOCKED       0x00000000
+#define DDR0_17_DLLLOCKREG_LOCKED         0x00010000
+
+#define DDR0_22                         0x16
+/* ECC */
+#define DDR0_22_CTRL_RAW_MASK             0x03000000
+#define DDR0_22_CTRL_RAW_ECC_DISABLE      0x00000000 /* ECC not enabled */
+#define DDR0_22_CTRL_RAW_ECC_CHECK_ONLY   0x01000000 /* ECC no correction */
+#define DDR0_22_CTRL_RAW_NO_ECC_RAM       0x02000000 /* Not a ECC RAM*/
+#define DDR0_22_CTRL_RAW_ECC_ENABLE       0x03000000 /* ECC correcting on */
+#define DDR0_03_CASLAT_DECODE(n)            ((((unsigned long)(n))>>16)&0x7)
+
+#ifdef CFG_ENABLE_SDRAM_CACHE
+#define MY_TLB_WORD2_I_ENABLE	0		/* enable caching on DDR2 */
+#else
+#define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE /* disable caching on DDR2 */
+#endif
+
+void program_tlb(u32 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value);
+
+#ifdef CONFIG_ADD_RAM_INFO
+void board_add_ram_info(int use_default)
+{
+	PPC440_SYS_INFO board_cfg;
+	u32 val;
+	mfsdram(DDR0_22, val);
+	val &= DDR0_22_CTRL_RAW_MASK;
+	switch (val) {
+	case DDR0_22_CTRL_RAW_ECC_DISABLE:
+		puts(" (ECC disabled");
+		break;
+	case DDR0_22_CTRL_RAW_ECC_CHECK_ONLY:
+		puts(" (ECC check only");
+		break;
+	case DDR0_22_CTRL_RAW_NO_ECC_RAM:
+		puts(" (no ECC ram");
+		break;
+	case DDR0_22_CTRL_RAW_ECC_ENABLE:
+		puts(" (ECC enabled");
+		break;
+	}
+
+	get_sys_info(&board_cfg);
+	printf(", %d MHz", (board_cfg.freqPLB * 2) / 1000000);
+
+	mfsdram(DDR0_03, val);
+	val = DDR0_03_CASLAT_DECODE(val);
+	printf(", CL%d)", val);
+}
+#endif
+
+/*--------------------------------------------------------------------
+ * wait_for_dlllock.
+ *--------------------------------------------------------------------*/
+static int wait_for_dlllock(void)
+{
+	unsigned long val;
+	int wait = 0;
+
+	/* -----------------------------------------------------------+
+	 * Wait for the DCC master delay line to finish calibration
+	 * ----------------------------------------------------------*/
+	mtdcr(ddrcfga, DDR0_17);
+	val = DDR0_17_DLLLOCKREG_UNLOCKED;
+
+	while (wait != 0xffff) {
+		val = mfdcr(ddrcfgd);
+		if ((val & DDR0_17_DLLLOCKREG_MASK) ==
+		    DDR0_17_DLLLOCKREG_LOCKED)
+			/* dlllockreg bit on */
+			return 0;
+		else
+			wait++;
+	}
+	debug("0x%04x: DDR0_17 Value (dlllockreg bit): 0x%08x\n", wait, val);
+	debug("Waiting for dlllockreg bit to raise\n");
+
+	return -1;
+}
+
+/***********************************************************************
+ *
+ * sdram_panic -- Panic if we cannot configure the sdram correctly
+ *
+ ************************************************************************/
+void sdram_panic(const char *reason)
+{
+	printf("\n%s: reason %s",  __FUNCTION__,  reason);
+	sysLedSet(0xff);
+	while (1) {
+	}
+	/* Never return */
+}
+
+#ifdef CONFIG_DDR_ECC
+static void blank_string(int size)
+{
+	int i;
+
+	for (i=0; i<size; i++)
+		putc('\b');
+	for (i=0; i<size; i++)
+		putc(' ');
+	for (i=0; i<size; i++)
+		putc('\b');
+}
+/*---------------------------------------------------------------------------+
+ * program_ecc.
+ *---------------------------------------------------------------------------*/
+static void program_ecc(unsigned long start_address, unsigned long num_bytes,
+			unsigned long tlb_word2_i_value)
+{
+	unsigned long current_address= start_address;
+	int loopi = 0;
+	u32 val;
+
+	char str[] = "ECC generation -";
+	char slash[] = "\\|/-\\|/-";
+
+	sync();
+	eieio();
+
+	puts(str);
+
+	if (tlb_word2_i_value == TLB_WORD2_I_ENABLE) {
+		/* ECC bit set method for non-cached memory */
+		/* This takes various seconds */
+		for(current_address = 0; current_address < num_bytes;
+		     current_address += sizeof(u32)) {
+			*(u32 *)current_address = 0;
+			if ((current_address % (2 << 20)) == 0) {
+				putc('\b');
+				putc(slash[loopi++ % 8]);
+			}
+		}
+	} else {
+		/* ECC bit set method for cached memory */
+		/* Fast method, no noticeable delay */
+		dcbz_area(start_address, num_bytes);
+		dflush();
+	}
+	blank_string(strlen(str));
+
+	/* Clear error status */
+	mfsdram(DDR0_00, val);
+	mtsdram(DDR0_00, val | DDR0_00_INT_ACK_ALL);
+
+	/* Set 'int_mask' parameter to functionnal value */
+	mfsdram(DDR0_01, val);
+	mtsdram(DDR0_01, ((val &~ DDR0_01_INT_MASK_MASK) |
+			  DDR0_01_INT_MASK_ALL_OFF));
+
+	return;
+}
+
+#endif
+
+/***********************************************************************
+ *
+ * initdram -- 440EPx's DDR controller is a DENALI Core
+ *
+ ************************************************************************/
+long int initdram (int board_type)
+{
+#define	HCU_HW_SDRAM_CONFIG_MASK 0x7
+#define INVALID_HW_CONFIG   "Invalid HW-Config"
+	uint16_t *hwVersReg    = (uint16_t *) HCU_HW_VERSION_REGISTER;
+	unsigned int dram_size=0;
+	mtsdram(DDR0_02, 0x00000000);
+
+	/* Values must be kept in sync with Excel-table <<A0001492.>> ! */
+	mtsdram(DDR0_00, 0x0000190A);
+	mtsdram(DDR0_01, 0x01000000);
+	mtsdram(DDR0_03, 0x02030602);
+	mtsdram(DDR0_04, 0x0A020200);
+	mtsdram(DDR0_05, 0x02020307);
+	switch (*hwVersReg & HCU_HW_SDRAM_CONFIG_MASK) {
+	case 0:
+		dram_size = 128 * 1024 * 1024 ;
+		mtsdram(DDR0_06, 0x0102C80D);  // 128MB RAM
+		mtsdram(DDR0_11, 0x000FC800);  // 128MB RAM
+		mtsdram(DDR0_43, 0x030A0300);  // 128MB RAM
+		break;
+	case 1:
+		dram_size = 256 * 1024 * 1024 ;
+		mtsdram(DDR0_06, 0x0102C812);  // 256MB RAM
+		mtsdram(DDR0_11, 0x0014C800);  // 256MB RAM
+		mtsdram(DDR0_43, 0x030A0200);  // 256MB RAM
+		break;
+	default:
+		sdram_panic(INVALID_HW_CONFIG);
+		break;
+	}
+	dram_size -= 16 * 1024 * 1024;
+	mtsdram(DDR0_07, 0x00090100);
+	// TCPD=200 cycles of clock input is required to lock the DLL.
+	// CKE must be HIGH the entire time.mtsdram(DDR0_08, 0x02C80001);
+	mtsdram(DDR0_08, 0x02C80001);
+	mtsdram(DDR0_09, 0x00011D5F);
+	mtsdram(DDR0_10, 0x00000100);
+	mtsdram(DDR0_12, 0x00000003);
+	mtsdram(DDR0_14, 0x00000000);
+	mtsdram(DDR0_17, 0x1D000000);
+	mtsdram(DDR0_18, 0x1D1D1D1D);
+	mtsdram(DDR0_19, 0x1D1D1D1D);
+	mtsdram(DDR0_20, 0x0B0B0B0B);
+	mtsdram(DDR0_21, 0x0B0B0B0B);
+	#define ECC_RAM  0x03267F0B
+	#define NO_ECC_RAM  0x00267F0B
+#ifdef CONFIG_DDR_ECC
+	mtsdram(DDR0_22, ECC_RAM);
+#else
+	mtsdram(DDR0_22, NO_ECC_RAM);
+#endif
+
+	mtsdram(DDR0_23, 0x00000000);
+	mtsdram(DDR0_24, 0x01020001);
+	mtsdram(DDR0_26, 0x2D930517);
+	mtsdram(DDR0_27, 0x00008236);
+	mtsdram(DDR0_28, 0x00000000);
+	mtsdram(DDR0_31, 0x00000000);
+	mtsdram(DDR0_42, 0x01000006);
+	mtsdram(DDR0_44, 0x00000003);
+	mtsdram(DDR0_02, 0x00000001);
+	wait_for_dlllock();
+	mtsdram(DDR0_00, 0x40000000);  /* Zero init bit */
+
+	/*
+	 * Program tlb entries for this size (dynamic)
+	 */
+	program_tlb(0, 0, dram_size, MY_TLB_WORD2_I_ENABLE);
+
+	/*
+	 * Setup 2nd TLB with same physical address but different virtual
+	 * address with cache enabled. This is done for fast ECC generation.
+	 */
+	program_tlb(0, CFG_DDR_CACHED_ADDR, dram_size, 0);
+
+#ifdef CONFIG_DDR_ECC
+	/*
+	 * If ECC is enabled, initialize the parity bits.
+	 */
+	program_ecc(CFG_DDR_CACHED_ADDR, dram_size, 0);
+#endif
+
+	return (dram_size);
+}