ppc4xx: Prepare Bamboo port for NAND booting support

This patch updates the "normal" Bamboo NOR booting port, so
that it is compatible with the coming soon NAND booting
Bamboo port.

It also enables the 2nd NAND flash on the Bamboo.

Signed-off-by: Stefan Roese <sr@denx.de>

board/amcc/bamboo/Makefile

@@ -1,5 +1,5 @@
 #
-# (C) Copyright 2002-2006
+# (C) Copyright 2002-2007
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # See file CREDITS for list of people who contributed to this
@@ -33,7 +33,7 @@ OBJS	:= $(addprefix $(obj),$(COBJS))
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
 
 $(LIB):	$(OBJS) $(SOBJS)
-	$(AR) $(ARFLAGS) $@ $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
 
 clean:
 	rm -f $(SOBJS) $(OBJS)

board/amcc/bamboo/bamboo.c

@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2005
+ * (C) Copyright 2005-2007
  * Stefan Roese, DENX Software Engineering, sr@denx.de.
  *
  * See file CREDITS for list of people who contributed to this
@@ -291,6 +291,7 @@ int checkboard(void)
 	return (0);
 }
 
+#if !(defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL))
 /*************************************************************************
  *
  * init_spd_array -- Bamboo has one bank onboard sdram (plus DIMM)
@@ -345,10 +346,12 @@ static void init_spd_array(void)
 	cfg_simulate_spd_eeprom[25]    = 0x00;    /* SDRAM Cycle Time (cas latency 1.5) = N.A */
 	cfg_simulate_spd_eeprom[12]    = 0x82;    /* refresh Rate Type: Normal (15.625us) + Self refresh */
 }
+#endif
 
 long int initdram (int board_type)
 {
-	long dram_size = 0;
+#if !(defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL))
+	long dram_size;
 
 	/*
 	 * First write simulated values in eeprom array for onboard bank 0
@@ -358,6 +361,9 @@ long int initdram (int board_type)
 	dram_size = spd_sdram();
 
 	return dram_size;
+#else
+	return CFG_MBYTES_SDRAM << 20;
+#endif
 }
 
 #if defined(CFG_DRAM_TEST)
@@ -881,11 +887,11 @@ void ext_bus_cntlr_init(void)
 		/*------------------------------------------------------------------------- */
 	case BOOT_FROM_NAND_FLASH0:
 		/*------------------------------------------------------------------------- */
-		ebc0_cs0_bnap_value = 0;
-		ebc0_cs0_bncr_value = 0;
+		ebc0_cs0_bnap_value = EBC0_BNAP_NAND_FLASH;
+		ebc0_cs0_bncr_value = EBC0_BNCR_NAND_FLASH_CS1;
 
-		ebc0_cs1_bnap_value = EBC0_BNAP_NAND_FLASH;
-		ebc0_cs1_bncr_value = EBC0_BNCR_NAND_FLASH_CS1;
+		ebc0_cs1_bnap_value = 0;
+		ebc0_cs1_bncr_value = 0;
 		ebc0_cs2_bnap_value = 0;
 		ebc0_cs2_bncr_value = 0;
 		ebc0_cs3_bnap_value = 0;
@@ -1409,10 +1415,10 @@ void update_ndfc_ios(void)
 	gpio_tab[GPIO0][6].in_out = GPIO_OUT;	    /* EBC_CS_N(1) */
 	gpio_tab[GPIO0][6].alt_nb = GPIO_ALT1;
 
-#if 0
 	gpio_tab[GPIO0][7].in_out = GPIO_OUT;	    /* EBC_CS_N(2) */
 	gpio_tab[GPIO0][7].alt_nb = GPIO_ALT1;
 
+#if 0
 	gpio_tab[GPIO0][7].in_out = GPIO_OUT;	    /* EBC_CS_N(3) */
 	gpio_tab[GPIO0][7].alt_nb = GPIO_ALT1;
 #endif
@@ -1900,12 +1906,21 @@ void configure_ppc440ep_pins(void)
 	{
 		update_ndfc_ios();
 
+#if !(defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL))
 		mtsdr(sdr_cust0, SDR0_CUST0_MUX_NDFC_SEL   |
 		      SDR0_CUST0_NDFC_ENABLE	|
 		      SDR0_CUST0_NDFC_BW_8_BIT	|
 		      SDR0_CUST0_NDFC_ARE_MASK	|
 		      SDR0_CUST0_CHIPSELGAT_EN1 |
 		      SDR0_CUST0_CHIPSELGAT_EN2);
+#else
+		mtsdr(sdr_cust0, SDR0_CUST0_MUX_NDFC_SEL   |
+		      SDR0_CUST0_NDFC_ENABLE	|
+		      SDR0_CUST0_NDFC_BW_8_BIT	|
+		      SDR0_CUST0_NDFC_ARE_MASK	|
+		      SDR0_CUST0_CHIPSELGAT_EN0 |
+		      SDR0_CUST0_CHIPSELGAT_EN2);
+#endif
 
 		ndfc_selection_in_fpga();
 	}

board/amcc/bamboo/config.mk

@@ -1,5 +1,5 @@
 #
-# (C) Copyright 2002-2006
+# (C) Copyright 2002-2007
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # See file CREDITS for list of people who contributed to this
@@ -21,7 +21,11 @@
 # MA 02111-1307 USA
 #
 
+sinclude $(OBJTREE)/board/$(BOARDDIR)/config.tmp
+
+ifndef TEXT_BASE
 TEXT_BASE = 0xFFFA0000
+endif
 
 PLATFORM_CPPFLAGS += -DCONFIG_440=1
 

board/amcc/bamboo/flash.c

@@ -53,7 +53,7 @@ flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips        */
 static unsigned long flash_addr_table[][CFG_MAX_FLASH_BANKS] = {
 	{0x87800001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
 	{0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66      */
-	{0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash  */
+	{0x87800001, 0x00000000, 0x00000000}, /* 0:boot from nand flash  */
 	{0x87F00000, 0x87F80000, 0xFFC00001}, /* 3:boot from big flash 33*/
 	{0x87F00000, 0x87F80000, 0xFFC00001}, /* 4:boot from big flash 66*/
 	{0x00000000, 0x00000000, 0x00000000}, /* 5:boot from             */
@@ -134,10 +134,10 @@ unsigned long flash_init(void)
 		flash_info[i].size = 0;
 
 		/* check whether the address is 0 */
-		if (flash_addr_table[index][i] == 0) {
+		if (flash_addr_table[index][i] == 0)
 			continue;
-		}
 
+		DEBUGF("Detection bank %d...\n", i);
 		/* call flash_get_size() to initialize sector address */
 		size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
 				   &flash_info[i]);

board/amcc/bamboo/init.S

@@ -1,74 +1,31 @@
 /*
-*
-* 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
-*/
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ *  Copyright (C) 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
+ */
 
 #include <ppc_asm.tmpl>
 #include <config.h>
-
-/* General */
-#define TLB_VALID   0x00000200
-
-/* Supported page sizes */
-
-#define SZ_1K	    0x00000000
-#define SZ_4K	    0x00000010
-#define SZ_16K	    0x00000020
-#define SZ_64K	    0x00000030
-#define SZ_256K	    0x00000040
-#define SZ_1M	    0x00000050
-#define SZ_8M       0x00000060
-#define SZ_16M	    0x00000070
-#define SZ_256M	    0x00000090
-
-/* Storage attributes */
-#define SA_W	    0x00000800	    /* Write-through */
-#define SA_I	    0x00000400	    /* Caching inhibited */
-#define SA_M	    0x00000200	    /* Memory coherence */
-#define SA_G	    0x00000100	    /* Guarded */
-#define SA_E	    0x00000080	    /* Endian */
-
-/* Access control */
-#define AC_X	    0x00000024	    /* Execute */
-#define AC_W	    0x00000012	    /* Write */
-#define AC_R	    0x00000009	    /* Read */
-
-/* Some handy macros */
-
-#define EPN(e)		((e) & 0xfffffc00)
-#define TLB0(epn,sz)	( (EPN((epn)) | (sz) | TLB_VALID ) )
-#define TLB1(rpn,erpn)	( ((rpn)&0xfffffc00) | (erpn) )
-#define TLB2(a)		( (a)&0x00000fbf )
-
-#define tlbtab_start\
-	mflr    r1  ;\
-	bl 0f	    ;
-
-#define tlbtab_end\
-	.long 0, 0, 0	;   \
-0:	mflr    r0	;   \
-	mtlr    r1	;   \
-	blr		;
-
-#define tlbentry(epn,sz,rpn,erpn,attr)\
-	.long TLB0(epn,sz),TLB1(rpn,erpn),TLB2(attr)
-
+#include <asm-ppc/mmu.h>
 
 /**************************************************************************
  * TLB TABLE
@@ -80,34 +37,68 @@
  *  Pointer to the table is returned in r1
  *
  *************************************************************************/
-
-    .section .bootpg,"ax"
-    .globl tlbtab
+	.section .bootpg,"ax"
+	.globl tlbtab
 
 tlbtab:
-    tlbtab_start
-
-    /*
-     * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
-     * speed up boot process. It is patched after relocation to enable SA_I
-     */
-    tlbentry( CFG_BOOT_BASE_ADDR, SZ_256M, CFG_BOOT_BASE_ADDR, 0, AC_R|AC_W|AC_X|SA_G/*|SA_I*/)
-
-    /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
-    tlbentry( CFG_INIT_RAM_ADDR, SZ_64K, CFG_INIT_RAM_ADDR, 0, AC_R|AC_W|AC_X|SA_G )
-
-    tlbentry( CFG_SDRAM_BASE, SZ_256M, CFG_SDRAM_BASE, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
-    tlbentry( CFG_PCI_BASE, SZ_256M, CFG_PCI_BASE, 0, AC_R|AC_W|SA_G|SA_I )
-    tlbentry( CFG_NVRAM_BASE_ADDR, SZ_256M, CFG_NVRAM_BASE_ADDR, 0, AC_R|AC_W|AC_X|SA_W|SA_I )
-    tlbentry( CFG_NAND_ADDR, SZ_256M, CFG_NAND_ADDR, 0, AC_R|AC_W|AC_X|SA_W|SA_I )
-
-    /* PCI */
-    tlbentry( CFG_PCI_MEMBASE, SZ_256M, CFG_PCI_MEMBASE, 0, AC_R|AC_W|SA_G|SA_I )
-    tlbentry( CFG_PCI_MEMBASE1, SZ_256M, CFG_PCI_MEMBASE1, 0, AC_R|AC_W|SA_G|SA_I )
-    tlbentry( CFG_PCI_MEMBASE2, SZ_256M, CFG_PCI_MEMBASE2, 0, AC_R|AC_W|SA_G|SA_I )
-    tlbentry( CFG_PCI_MEMBASE3, SZ_256M, CFG_PCI_MEMBASE3, 0, AC_R|AC_W|SA_G|SA_I )
-
-    /* USB 2.0 Device */
-    tlbentry( CFG_USB_DEVICE, SZ_1K, CFG_USB_DEVICE, 0, AC_R|AC_W|SA_G|SA_I )
-
-    tlbtab_end
+	tlbtab_start
+
+	/*
+	 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
+	 * speed up boot process. It is patched after relocation to enable SA_I
+	 */
+#ifndef CONFIG_NAND_SPL
+	tlbentry(CFG_BOOT_BASE_ADDR, SZ_256M, CFG_BOOT_BASE_ADDR, 0, AC_R|AC_W|AC_X|SA_G)
+#else
+	tlbentry(CFG_NAND_BOOT_SPL_SRC, SZ_4K, CFG_NAND_BOOT_SPL_SRC, 0, AC_R|AC_W|AC_X|SA_G)
+#endif
+
+	/* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
+	tlbentry(CFG_INIT_RAM_ADDR, SZ_4K, CFG_INIT_RAM_ADDR, 0, AC_R|AC_W|AC_X|SA_G)
+
+	tlbentry(CFG_SDRAM_BASE, SZ_256M, CFG_SDRAM_BASE, 0, AC_R|AC_W|AC_X|SA_G|SA_I)
+
+	/* PCI base & peripherals */
+	tlbentry(CFG_PCI_BASE, SZ_256M, CFG_PCI_BASE, 0, AC_R|AC_W|SA_G|SA_I)
+
+	tlbentry(CFG_NVRAM_BASE_ADDR, SZ_256M, CFG_NVRAM_BASE_ADDR, 0, AC_R|AC_W|AC_X|SA_W|SA_I)
+	tlbentry(CFG_NAND_ADDR, SZ_4K, CFG_NAND_ADDR, 0, AC_R|AC_W|AC_X|SA_W|SA_I)
+
+	/* PCI */
+	tlbentry(CFG_PCI_MEMBASE, SZ_256M, CFG_PCI_MEMBASE, 0, AC_R|AC_W|SA_G|SA_I)
+	tlbentry(CFG_PCI_MEMBASE1, SZ_256M, CFG_PCI_MEMBASE1, 0, AC_R|AC_W|SA_G|SA_I)
+	tlbentry(CFG_PCI_MEMBASE2, SZ_256M, CFG_PCI_MEMBASE2, 0, AC_R|AC_W|SA_G|SA_I)
+	tlbentry(CFG_PCI_MEMBASE3, SZ_256M, CFG_PCI_MEMBASE3, 0, AC_R|AC_W|SA_G|SA_I)
+
+	/* USB 2.0 Device */
+	tlbentry(CFG_USB_DEVICE, SZ_1K, CFG_USB_DEVICE, 0, AC_R|AC_W|SA_G|SA_I)
+
+	tlbtab_end
+
+#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+	/*
+	 * For NAND booting the first TLB has to be reconfigured to full size
+	 * and with caching disabled after running from RAM!
+	 */
+#define TLB00	TLB0(CFG_BOOT_BASE_ADDR, SZ_256M)
+#define TLB01	TLB1(CFG_BOOT_BASE_ADDR, 0)
+#define TLB02	TLB2(AC_R|AC_W|AC_X|SA_G|SA_I)
+
+	.globl	reconfig_tlb0
+reconfig_tlb0:
+	sync
+	isync
+	addi	r4,r0,0x0000		/* TLB entry #0 */
+	lis	r5,TLB00@h
+	ori	r5,r5,TLB00@l
+	tlbwe	r5,r4,0x0000		/* Save it out */
+	lis	r5,TLB01@h
+	ori	r5,r5,TLB01@l
+	tlbwe	r5,r4,0x0001		/* Save it out */
+	lis	r5,TLB02@h
+	ori	r5,r5,TLB02@l
+	tlbwe	r5,r4,0x0002		/* Save it out */
+	sync
+	isync
+	blr
+#endif