powerpc/p1022ds: Add support for NAND and NAND boot using SPL

Add defines needed to access NAND, remove second flash bank that is
actually connected to NAND.

Add nand booting support for P1022DS with hardcoded DDR config using
SPL framework from 2011

Signed-off-by: Matthew McClintock <msm@freescale.com>
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Jiang Yutang <b14898@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>

4 files changed, 158 insertions, 6 deletions

diff --git a/board/freescale/p1022ds/Makefile b/board/freescale/p1022ds/Makefile
index c6d3418..0eeef05 100644
--- a/board/freescale/p1022ds/Makefile
+++ b/board/freescale/p1022ds/Makefile
@@ -11,12 +11,26 @@ 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-$(CONFIG_FSL_DIU_FB) += diu.o
+endif
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS-y))
diff --git a/board/freescale/p1022ds/law.c b/board/freescale/p1022ds/law.c
index b23b8f9..c4398dd 100644
--- a/board/freescale/p1022ds/law.c
+++ b/board/freescale/p1022ds/law.c
@@ -16,6 +16,7 @@
 struct law_entry law_table[] = {
 	SET_LAW(CONFIG_SYS_FLASH_BASE_PHYS, LAW_SIZE_256M, LAW_TRGT_IF_LBC),
 	SET_LAW(PIXIS_BASE_PHYS, LAW_SIZE_4K, LAW_TRGT_IF_LBC),
+	SET_LAW(CONFIG_SYS_NAND_BASE_PHYS, LAW_SIZE_32K, LAW_TRGT_IF_LBC),
 };
 
 int num_law_entries = ARRAY_SIZE(law_table);
diff --git a/board/freescale/p1022ds/spl_minimal.c b/board/freescale/p1022ds/spl_minimal.c
new file mode 100644
index 0000000..8d12fa6
--- /dev/null
+++ b/board/freescale/p1022ds/spl_minimal.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2011 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 <asm/fsl_law.h>
+#include <asm/fsl_ddr_sdram.h>
+
+
+/*
+ * Fixed sdram init -- doesn't use serial presence detect.
+ */
+void sdram_init(void)
+{
+	volatile 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, &ddr->timing_cfg_3);
+	__raw_writel(CONFIG_SYS_DDR_TIMING_0, &ddr->timing_cfg_0);
+	__raw_writel(CONFIG_SYS_DDR_TIMING_1, &ddr->timing_cfg_1);
+	__raw_writel(CONFIG_SYS_DDR_TIMING_2, &ddr->timing_cfg_2);
+
+	__raw_writel(CONFIG_SYS_DDR_CONTROL_2, &ddr->sdram_cfg_2);
+	__raw_writel(CONFIG_SYS_DDR_MODE_1, &ddr->sdram_mode);
+	__raw_writel(CONFIG_SYS_DDR_MODE_2, &ddr->sdram_mode_2);
+
+	__raw_writel(CONFIG_SYS_DDR_INTERVAL, &ddr->sdram_interval);
+	__raw_writel(CONFIG_SYS_DDR_DATA_INIT, &ddr->sdram_data_init);
+	__raw_writel(CONFIG_SYS_DDR_CLK_CTRL, &ddr->sdram_clk_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);
+	__raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL, &ddr->ddr_wrlvl_cntl);
+
+	/* Set, but do not enable the memory */
+	__raw_writel(CONFIG_SYS_DDR_CONTROL & ~SDRAM_CFG_MEM_EN,
+			&ddr->sdram_cfg);
+
+	in_be32(&ddr->sdram_cfg);
+	udelay(500);
+
+	/* Let the controller go */
+	out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN);
+	in_be32(&ddr->sdram_cfg);
+
+	set_next_law(0, CONFIG_SYS_SDRAM_SIZE_LAW, LAW_TRGT_IF_DDR_1);
+}
+
+const static u32 sysclk_tbl[] = {
+	66666000, 7499900, 83332500, 8999900,
+	99999000, 11111000, 12499800, 13333200
+};
+
+void board_init_f(ulong bootflag)
+{
+	int px_spd;
+	u32 plat_ratio, sys_clk, bus_clk;
+	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+
+	/* for FPGA */
+	set_lbc_br(2, CONFIG_SYS_BR2_PRELIM);
+	set_lbc_or(2, CONFIG_SYS_OR2_PRELIM);
+
+	/* initialize selected port with appropriate baud rate */
+	px_spd = in_8((unsigned char *)(PIXIS_BASE + PIXIS_SPD));
+	sys_clk = sysclk_tbl[px_spd & PIXIS_SPD_SYSCLK_MASK];
+	plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
+	bus_clk = sys_clk * plat_ratio / 2;
+
+	NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
+			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/p1022ds/tlb.c b/board/freescale/p1022ds/tlb.c
index 71e71f7..3acc449 100644
--- a/board/freescale/p1022ds/tlb.c
+++ b/board/freescale/p1022ds/tlb.c
@@ -41,6 +41,7 @@ struct fsl_e_tlb_entry tlb_table[] = {
 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		      0, 1, BOOKE_PAGESZ_1M, 1),
 
+#ifndef CONFIG_SPL_BUILD
 	/* W**G* - Flash/promjet, localbus */
 	/* This will be changed to *I*G* after relocation to RAM. */
 	SET_TLB_ENTRY(1, CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE_PHYS,
@@ -67,24 +68,31 @@ struct fsl_e_tlb_entry tlb_table[] = {
 	SET_TLB_ENTRY(1, CONFIG_SYS_PCIE3_IO_VIRT, CONFIG_SYS_PCIE3_IO_PHYS,
 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		      0, 6, BOOKE_PAGESZ_256K, 1),
+#endif
 
 	SET_TLB_ENTRY(1, PIXIS_BASE, PIXIS_BASE_PHYS,
 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		      0, 7, BOOKE_PAGESZ_4K, 1),
 
-#ifdef CONFIG_SYS_RAMBOOT
-	/* *I*G - eSDHC/eSPI/NAND boot */
+#if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_SPL)
+	/* **** - eSDHC/eSPI/NAND boot */
 	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),
-
-	/* map the second 1G */
+	/* **** - eSDHC/eSPI/NAND boot - second 1GB of memory */
 	SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE + 0x40000000,
 			CONFIG_SYS_DDR_SDRAM_BASE + 0x40000000,
-			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+			MAS3_SX|MAS3_SW|MAS3_SR, 0,
 			0, 9, BOOKE_PAGESZ_1G, 1),
 #endif
-#
+
+#ifdef CONFIG_SYS_NAND_BASE
+	/* *I*G - NAND */
+	SET_TLB_ENTRY(1, CONFIG_SYS_NAND_BASE, CONFIG_SYS_NAND_BASE_PHYS,
+			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+			0, 10, BOOKE_PAGESZ_16K, 1),
+#endif
+
 };
 
 int num_tlb_entries = ARRAY_SIZE(tlb_table);