board/bsc9131rdb:Add NAND boot support using new SPL format

- Add NAND boot target
   - defines constants
   - Add spl_minimal.c to initialise DDR
   - update TLB entries as per NAND boot

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

3 files changed, 138 insertions, 4 deletions

diff --git a/board/freescale/bsc9131rdb/Makefile b/board/freescale/bsc9131rdb/Makefile
index 6f4cb26..2e829ad 100644
--- a/board/freescale/bsc9131rdb/Makefile
+++ b/board/freescale/bsc9131rdb/Makefile
@@ -24,12 +24,28 @@ include $(TOPDIR)/config.mk
 
 LIB    = $(obj)lib$(BOARD).o
 
+MINIMAL=
+
+ifdef CONFIG_SPL_BUILD
+ifdef CONFIG_SPL_INIT_MINIMAL
+MINIMAL=y
+endif
+endif
+
+ifdef MINIMAL
+
+COBJS-y	+= spl_minimal.o tlb.o law.o
+
+else
+
 COBJS-y        += $(BOARD).o
 COBJS-y        += ddr.o
 COBJS-y        += law.o
 COBJS-y        += tlb.o
 #COBJS-y		+= bsc9131rdb_mux.o
 
+endif
+
 SRCS   := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
 OBJS   := $(addprefix $(obj),$(COBJS-y))
 SOBJS  := $(addprefix $(obj),$(SOBJS))
diff --git a/board/freescale/bsc9131rdb/spl_minimal.c b/board/freescale/bsc9131rdb/spl_minimal.c
new file mode 100644
index 0000000..301115e
--- /dev/null
+++ b/board/freescale/bsc9131rdb/spl_minimal.c
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * 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 <ns16550.h>
+#include <asm/io.h>
+#include <nand.h>
+#include <linux/compiler.h>
+#include <asm/fsl_law.h>
+#include <asm/fsl_ddr_sdram.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Fixed sdram init -- doesn't use serial presence detect.
+ */
+static void sdram_init(void)
+{
+	ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC8xxx_DDR_ADDR;
+
+	__raw_writel(CONFIG_SYS_DDR_CS0_BNDS, &ddr->cs0_bnds);
+	__raw_writel(CONFIG_SYS_DDR_CS0_CONFIG, &ddr->cs0_config);
+#if CONFIG_CHIP_SELECTS_PER_CTRL > 1
+	__raw_writel(CONFIG_SYS_DDR_CS1_BNDS, &ddr->cs1_bnds);
+	__raw_writel(CONFIG_SYS_DDR_CS1_CONFIG, &ddr->cs1_config);
+#endif
+	__raw_writel(CONFIG_SYS_DDR_TIMING_3_800, &ddr->timing_cfg_3);
+	__raw_writel(CONFIG_SYS_DDR_TIMING_0_800, &ddr->timing_cfg_0);
+	__raw_writel(CONFIG_SYS_DDR_TIMING_1_800, &ddr->timing_cfg_1);
+	__raw_writel(CONFIG_SYS_DDR_TIMING_2_800, &ddr->timing_cfg_2);
+
+	__raw_writel(CONFIG_SYS_DDR_CONTROL_2, &ddr->sdram_cfg_2);
+	__raw_writel(CONFIG_SYS_DDR_MODE_1_800, &ddr->sdram_mode);
+	__raw_writel(CONFIG_SYS_DDR_MODE_2_800, &ddr->sdram_mode_2);
+
+	__raw_writel(CONFIG_SYS_DDR_INTERVAL_800, &ddr->sdram_interval);
+	__raw_writel(CONFIG_SYS_DDR_DATA_INIT, &ddr->sdram_data_init);
+	__raw_writel(CONFIG_SYS_DDR_CLK_CTRL_800, &ddr->sdram_clk_cntl);
+
+	__raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL_800, &ddr->ddr_wrlvl_cntl);
+	__raw_writel(CONFIG_SYS_DDR_TIMING_4, &ddr->timing_cfg_4);
+	__raw_writel(CONFIG_SYS_DDR_TIMING_5, &ddr->timing_cfg_5);
+	__raw_writel(CONFIG_SYS_DDR_ZQ_CONTROL, &ddr->ddr_zq_cntl);
+
+	/* Set, but do not enable the memory */
+	__raw_writel(CONFIG_SYS_DDR_CONTROL & ~SDRAM_CFG_MEM_EN, &ddr->sdram_cfg);
+
+	asm volatile("sync;isync");
+	udelay(500);
+
+	/* Let the controller go */
+	out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN);
+
+	set_next_law(CONFIG_SYS_NAND_DDR_LAW, LAW_SIZE_1G, LAW_TRGT_IF_DDR_1);
+}
+
+void board_init_f(ulong bootflag)
+{
+	u32 plat_ratio;
+	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+
+	/* initialize selected port with appropriate baud rate */
+	plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
+	plat_ratio >>= 1;
+	gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio;
+
+	NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
+		     gd->bus_clk / 16 / CONFIG_BAUDRATE);
+
+	puts("\nNAND boot... ");
+
+	/* Initialize the DDR3 */
+	sdram_init();
+
+	/* copy code to RAM and jump to it - this should not return */
+	/* NOTE - code has to be copied out of NAND buffer before
+	 * other blocks can be read.
+	 */
+	relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE);
+}
+
+void board_init_r(gd_t *gd, ulong dest_addr)
+{
+	nand_boot();
+}
+
+void putc(char c)
+{
+	if (c == '\n')
+		NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
+
+	NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
+}
+
+void puts(const char *str)
+{
+	while (*str)
+		putc(*str++);
+}
diff --git a/board/freescale/bsc9131rdb/tlb.c b/board/freescale/bsc9131rdb/tlb.c
index 5b68f4a..243a38f 100644
--- a/board/freescale/bsc9131rdb/tlb.c
+++ b/board/freescale/bsc9131rdb/tlb.c
@@ -43,16 +43,16 @@ struct fsl_e_tlb_entry tlb_table[] = {
 
 	/* TLB 1 */
 	/* *I*** - Covers boot page */
-	SET_TLB_ENTRY(1, 0xfffff000, 0xfffff000,
-			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
-			0, 0, BOOKE_PAGESZ_4K, 1),
+		SET_TLB_ENTRY(1, 0xffffe000, 0xffffe000,
+			      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+			      0, 0, BOOKE_PAGESZ_8K, 1),
 
 	/* *I*G* - CCSRBAR (PA) */
 	SET_TLB_ENTRY(1, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
 			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 			0, 1, BOOKE_PAGESZ_1M, 1),
 
-#if defined(CONFIG_SYS_RAMBOOT)
+#if  defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_SPL)
 	SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE, CONFIG_SYS_DDR_SDRAM_BASE,
 			MAS3_SX|MAS3_SW|MAS3_SR, 0,
 			0, 8, BOOKE_PAGESZ_1G, 1),