mpc5200: Add a4m2k board port

This patch adds the a4m2k MPC5200B board port. Its a derivate of
the a3m071 board with only minor changes.

Additionally this patch includes some clean-up changes:
- Remove I2C support from a3m071 as its unused
- Fix/enhance default env variables
- Fix some comments
- Add newly introduced CONFIG_SPL_TARGET to automatically build
  "u-boot-img.bin"
- Fix dtb patching in READ desciption for SPL Linux booting:
  "fdt chosen" needs to get called to patch/create the chosen node.
- Add missing call to spl_board_init():
  Define CONFIG_SPL_BOARD_INIT so that spl_board_init() will get
  called in the SPL version.

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

6 files changed, 188 insertions, 55 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 8603085f304..b6c761506e7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -397,6 +397,7 @@ Ricardo Ribalda <ricardo.ribalda@uam.es>
 Stefan Roese <sr@denx.de>
 
 	a3m071		MPC5200
+	a4m2k		MPC5200
 
 	P3M7448		MPC7448
 
diff --git a/board/a3m071/README b/board/a3m071/README
index 7698614a621..a0fe832fb24 100644
--- a/board/a3m071/README
+++ b/board/a3m071/README
@@ -62,7 +62,7 @@ the following command:
 
 All this can be integrated into an environment command:
 => setenv upd_fdt 'tftp 1800000 a3m071/a3m071.dtb;run mtdargs addip2 addtty; \
-	fdt addr 1800000;fdt boardsetup;erase fc060000 fc07ffff; \
+	fdt addr 1800000;fdt boardsetup;fdt chosen;erase fc060000 fc07ffff; \
 	cp.b 1800000 fc060000 10000'
 => saveenv
 
diff --git a/board/a3m071/a3m071.c b/board/a3m071/a3m071.c
index 89ced824eb6..0a86e9abc1e 100644
--- a/board/a3m071/a3m071.c
+++ b/board/a3m071/a3m071.c
@@ -24,10 +24,15 @@
 #include <mpc5xxx.h>
 #include <pci.h>
 #include <miiphy.h>
+#include <linux/compiler.h>
 #include <asm/processor.h>
 #include <asm/io.h>
 
+#ifdef CONFIG_A4M2K
+#include "is46r16320d.h"
+#else
 #include "mt46v16m16-75.h"
+#endif
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -63,6 +68,12 @@ static void sdram_start(int hi_addr)
 
 	/* normal operation */
 	out_be32((void *)MPC5XXX_SDRAM_CTRL, control);
+
+	/*
+	 * Wait a short while for the DLL to lock before accessing
+	 * the SDRAM
+	 */
+	udelay(100);
 }
 #endif
 
@@ -157,12 +168,6 @@ static void get_revisions(int *failsavelevel, int *digiboardversion,
 	struct mpc5xxx_gpt_0_7 *gpt = (struct mpc5xxx_gpt_0_7 *)MPC5XXX_GPT;
 	u8 val;
 
-	/*
-	 * Figure out failsavelevel
-	 * see ticket dsvk#59
-	 */
-	*failsavelevel = 0;	/* 0=failsave, 1=board ok, 2=fpga ok */
-
 	/* read digitalboard-version from TMR[2..4] */
 	val = 0;
 	val |= (gpt->gpt2.sr & (1 << (31 - 23))) ? (1) : 0;
@@ -170,6 +175,17 @@ static void get_revisions(int *failsavelevel, int *digiboardversion,
 	val |= (gpt->gpt4.sr & (1 << (31 - 23))) ? (1 << 2) : 0;
 	*digiboardversion = val;
 
+	/*
+	 * A4M2K only supports digiboardversion. No failsavelevel and
+	 * fpgaversion here.
+	 */
+#if !defined(CONFIG_A4M2K)
+	/*
+	 * Figure out failsavelevel
+	 * see ticket dsvk#59
+	 */
+	*failsavelevel = 0;	/* 0=failsave, 1=board ok, 2=fpga ok */
+
 	if (*digiboardversion == 0) {
 		*failsavelevel = 1;	/* digiboard-version ok */
 
@@ -183,6 +199,7 @@ static void get_revisions(int *failsavelevel, int *digiboardversion,
 		if (*fpgaversion == 1)
 			*failsavelevel = 2;	/* fpga-version ok */
 	}
+#endif
 }
 
 /*
@@ -196,6 +213,11 @@ void spl_board_init(void)
 	struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5XXX_GPIO;
 	struct mpc5xxx_mmap_ctl *mm =
 		(struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
+
+#if defined(CONFIG_A4M2K)
+	/* enable CS3 and CS5 (FPGA) */
+	setbits_be32(&mm->ipbi_ws_ctrl, (1 << 19) | (1 << 21));
+#else
 	int digiboardversion;
 	int failsavelevel;
 	int fpgaversion;
@@ -219,6 +241,7 @@ void spl_board_init(void)
 
 	/* And write new value back to register */
 	out_be32(&mm->ipbi_ws_ctrl, val);
+#endif
 
 	/*
 	 * No need to change the pin multiplexing (MPC5XXX_GPS_PORT_CONFIG)
@@ -234,6 +257,55 @@ void spl_board_init(void)
 	 */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, 1 << (31 - 0));
 
+#if defined(CONFIG_A4M2K)
+	/* Setup USB[x] as MPCDiag[0..3] GPIO outputs */
+
+	/* set USB0,6,7,8 (MPCDiag[0..3]) direction to output */
+	gpio->simple_ddr |= 1 << (31 - 15);
+	gpio->simple_ddr |= 1 << (31 - 14);
+	gpio->simple_ddr |= 1 << (31 - 13);
+	gpio->simple_ddr |= 1 << (31 - 12);
+
+	/* enable USB0,6,7,8 (MPCDiag[0..3]) as GPIO */
+	gpio->simple_gpioe |= 1 << (31 - 15);
+	gpio->simple_gpioe |= 1 << (31 - 14);
+	gpio->simple_gpioe |= 1 << (31 - 13);
+	gpio->simple_gpioe |= 1 << (31 - 12);
+
+	/* Setup PSC2[0..2] as STSLED[0..2] GPIO outputs */
+
+	/* set PSC2[0..2] (STSLED[0..2]) direction to output */
+	gpio->simple_ddr |= 1 << (31 - 27);
+	gpio->simple_ddr |= 1 << (31 - 26);
+	gpio->simple_ddr |= 1 << (31 - 25);
+
+	/* enable PSC2[0..2] (STSLED[0..2]) as GPIO */
+	gpio->simple_gpioe |= 1 << (31 - 27);
+	gpio->simple_gpioe |= 1 << (31 - 26);
+	gpio->simple_gpioe |= 1 << (31 - 25);
+
+	/* Setup PSC6[2] as MRST2 self reset GPIO output */
+
+	/* set PSC6[2]/IRDA_TX (MRST2) direction to output */
+	gpio->simple_ddr |= 1 << (31 - 3);
+
+	/* set PSC6[2]/IRDA_TX (MRST2) output as open drain */
+	gpio->simple_ode |= 1 << (31 - 3);
+
+	/* set PSC6[2]/IRDA_TX (MRST2) output as default high */
+	gpio->simple_dvo |= 1 << (31 - 3);
+
+	/* enable PSC6[2]/IRDA_TX (MRST2) as GPIO */
+	gpio->simple_gpioe |= 1 << (31 - 3);
+
+	/* Setup PSC6[3] as HARNSSCD harness code GPIO input */
+
+	/* set PSC6[3]/IR_USB_CLK (HARNSSCD) direction to input */
+	gpio->simple_ddr |= 0 << (31 - 2);
+
+	/* enable PSC6[3]/IR_USB_CLK (HARNSSCD) as GPIO */
+	gpio->simple_gpioe |= 1 << (31 - 2);
+#else
 	/* setup GPIOs for status-leds if needed - see ticket #57 */
 	if (failsavelevel > 0) {
 		/* digiboard-version is OK */
@@ -267,7 +339,7 @@ void spl_board_init(void)
 		 * already cleared (intr_ctrl) MBAR+0x0510 ECLR[0] bit above
 		 */
 	}
-
+#endif
 }
 
 int checkboard(void)
@@ -278,11 +350,16 @@ int checkboard(void)
 
 	get_revisions(&failsavelevel, &digiboardversion, &fpgaversion);
 
+#ifdef CONFIG_A4M2K
+	puts("Board: A4M2K\n");
+	printf("       digiboard IO version %u\n", digiboardversion);
+#else
 	puts("Board: A3M071\n");
 	printf("Rev:   failsave level       %u\n", failsavelevel);
 	printf("       digiboard IO version %u\n", digiboardversion);
 	if (failsavelevel > 0)	/* only if fpga-version red */
 		printf("       fpga IO version      %u\n", fpgaversion);
+#endif
 
 	return 0;
 }
diff --git a/board/a3m071/is46r16320d.h b/board/a3m071/is46r16320d.h
new file mode 100644
index 00000000000..8183d814696
--- /dev/null
+++ b/board/a3m071/is46r16320d.h
@@ -0,0 +1,35 @@
+/*
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.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.
+ */
+
+#define SDRAM_DDR		/* is DDR */
+
+#if defined(CONFIG_MPC5200)
+/* Settings for XLB = 132 MHz */
+/* see is46r16320d datasheet and MPC5200UM chap. 8.6.1. */
+
+/* SDRAM Config Standard timing */
+#define SDRAM_MODE	0x008d0000
+#define SDRAM_EMODE	0x40010000
+#define SDRAM_CONTROL	0x70430f00
+#define SDRAM_CONFIG1	0x33622930
+#define SDRAM_CONFIG2	0x46670000
+#define SDRAM_TAPDELAY	0x10000000
+
+#else
+#error CONFIG_MPC5200 not defined
+#endif
diff --git a/boards.cfg b/boards.cfg
index 136ea0ae293..e929b9dc2f7 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -485,6 +485,7 @@ cmi_mpc5xx                   powerpc     mpc5xx      cmi
 PATI                         powerpc     mpc5xx      pati                mpl
 a3m071                       powerpc     mpc5xxx     a3m071
 a4m072                       powerpc     mpc5xxx     a4m072
+a4m2k                        powerpc     mpc5xxx     a3m071              -              -           a3m071:A4M2K
 BC3450                       powerpc     mpc5xxx     bc3450
 canmb                        powerpc     mpc5xxx
 cm5200                       powerpc     mpc5xxx
diff --git a/include/configs/a3m071.h b/include/configs/a3m071.h
index df3b4ae90a2..d8559d805ac 100644
--- a/include/configs/a3m071.h
+++ b/include/configs/a3m071.h
@@ -26,15 +26,22 @@
 #define CONFIG_MPC5200
 #define CONFIG_MPC5xxx		1	/* This is an MPC5xxx CPU */
 #define CONFIG_A3M071			/* ... on A3M071 board */
-#define CONFIG_MPC5200_DDR		/* ... use DDR RAM	*/
 
 #define	CONFIG_SYS_TEXT_BASE	0x01000000	/* boot low for 32 MiB boards */
 
+#define CONFIG_SPL_TARGET	"u-boot-img.bin"
+
 #define CONFIG_SYS_MPC5XXX_CLKIN	33000000 /* ... running at 33MHz */
 
 #define CONFIG_MISC_INIT_R
 #define CONFIG_SYS_LOWBOOT		/* Enable lowboot	*/
 
+#ifdef CONFIG_A4M2K
+#define CONFIG_HOSTNAME		a4m2k
+#else
+#define CONFIG_HOSTNAME		a3m071
+#endif
+
 /*
  * Serial console configuration
  */
@@ -50,9 +57,6 @@
 
 #define CONFIG_CMD_BSP
 #define CONFIG_CMD_CACHE
-#define CONFIG_CMD_DATE
-#define CONFIG_CMD_EEPROM
-#define CONFIG_CMD_I2C
 #define CONFIG_CMD_MII
 #define CONFIG_CMD_REGINFO
 
@@ -61,7 +65,11 @@
  */
 #define CONFIG_SYS_IPBCLK_EQUALS_XLBCLK		/* define for 133MHz speed */
 /* define for 66MHz speed - undef for 33MHz PCI clock speed */
+#ifdef CONFIG_A4M2K
+#define CONFIG_SYS_PCICLK_EQUALS_IPBCLK_DIV2
+#else
 #undef CONFIG_SYS_PCICLK_EQUALS_IPBCLK_DIV2
+#endif
 
 /* pass open firmware flat tree */
 #define CONFIG_OF_LIBFDT
@@ -76,33 +84,10 @@
 #define OF_STDOUT_PATH		"/soc5200@f0000000/serial@2000"
 
 /*
- * I2C configuration
- */
-#define CONFIG_HARD_I2C				/* I2C with hardware support */
-#define CONFIG_SYS_I2C_MODULE		2	/* Select I2C module #1 or #2 */
-
-#define CONFIG_SYS_I2C_SPEED		100000 /* 100 kHz */
-#define CONFIG_SYS_I2C_SLAVE		0x7F
-
-/*
- * EEPROM configuration
- */
-#define CONFIG_SYS_I2C_EEPROM_ADDR		0x53
-#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN		2
-#define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS	6
-#define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS	10
-
-/*
- * RTC configuration
- */
-#define CONFIG_RTC_PCF8563
-#define CONFIG_SYS_I2C_RTC_ADDR		0x51
-
-/*
  * NOR flash configuration
  */
 #define CONFIG_SYS_FLASH_BASE		0xfc000000
-#define CONFIG_SYS_FLASH_SIZE		0x01000000
+#define CONFIG_SYS_FLASH_SIZE		0x02000000
 #define CONFIG_ENV_ADDR			(CONFIG_SYS_FLASH_BASE + 0x40000)
 
 #define CONFIG_SYS_MAX_FLASH_BANKS	1
@@ -153,7 +138,11 @@
  */
 #define CONFIG_MPC5xxx_FEC
 #define CONFIG_MPC5xxx_FEC_MII100
+#ifdef CONFIG_A4M2K
+#define CONFIG_PHY_ADDR			0x01
+#else
 #define CONFIG_PHY_ADDR			0x00
+#endif
 
 /*
  * GPIO configuration
@@ -166,19 +155,23 @@
  *          2 means fpga ok
  */
 
+#ifdef CONFIG_A4M2K
+#define CONFIG_SYS_GPS_PORT_CONFIG	0x0005C805
+#else
 /* for failsave-level 0 - full failsave */
 #define CONFIG_SYS_GPS_PORT_CONFIG	0x1005C005
 /* for failsave-level 1 - only digiboard ok */
 #define CONFIG_SYS_GPS_PORT_CONFIG_1	0x1005C005
 /* for failsave-level 2 - all ok */
 #define CONFIG_SYS_GPS_PORT_CONFIG_2	0x1005C005
+#endif
 
 /*
  * Configuration matrix
  *                        MSB                          LSB
- * failsave 0  0x1005C005  00010000000001011100000001100101  ( full failsave )
- * failsave 1  0x1005C005  00010000000001011100000001100101  ( digib.-ver ok )
- * failsave 2  0x1005C005  00010000000001011100000001100101  ( all ok )
+ * failsave 0  0x1005C005  00010000000001011100000000000101  ( full failsave )
+ * failsave 1  0x1005C005  00010000000001011100000000000101  ( digib.-ver ok )
+ * failsave 2  0x1005C005  00010000000001011100000000000101  ( all ok )
  *                         || ||| ||  |   ||| |   |   |   |
  *                         || ||| ||  |   ||| |   |   |   |  bit rev name
  *                         ++-+++-++--+---+++-+---+---+---+-  0   31 CS1
@@ -254,30 +247,47 @@
 #define CONFIG_SYS_BOOTCS_SIZE		CONFIG_SYS_FLASH_SIZE
 #define CONFIG_SYS_CS0_START		CONFIG_SYS_FLASH_BASE
 #define CONFIG_SYS_CS0_SIZE		CONFIG_SYS_FLASH_SIZE
+
+#ifdef CONFIG_A4M2K
+/* external MRAM */
+#define CONFIG_SYS_CS1_START		0xf1000000
+#define CONFIG_SYS_CS1_SIZE		(512 << 10)	/* 512KiB MRAM */
+#endif
+
 #define CONFIG_SYS_CS2_START		0xe0000000
 #define CONFIG_SYS_CS2_SIZE		0x00100000
 
-/* FPGA slave io (512kiB) - see ticket #66 */
+/* FPGA slave io (512kiB / 1MiB) - see ticket #66 */
 #define CONFIG_SYS_CS3_START		0xE9000000
+#ifdef CONFIG_A4M2K
+#define CONFIG_SYS_CS3_SIZE		0x00100000
+#else
 #define CONFIG_SYS_CS3_SIZE		0x00080000
+#endif
 /* 00000000 00110010 1 0 1 1 10 01 00 00 0 0 0 0  = 0x0032B900 */
 #define CONFIG_SYS_CS3_CFG		0x0032B900
 
+#ifndef CONFIG_A4M2K
 /* Diagnosis Interface - see ticket #63 */
 #define CONFIG_SYS_CS4_START		0xEA000000
 #define CONFIG_SYS_CS4_SIZE		0x00000001
 /* 00000000 00000010 1 0 1 1 10 01 00 00 0 0 0 0  = 0x0002B900 */
 #define CONFIG_SYS_CS4_CFG		0x0002B900
+#endif
 
-/* FPGA master io (64kiB) - see ticket #66 */
+/* FPGA master io (64kiB / 1MiB) - see ticket #66 */
 #define CONFIG_SYS_CS5_START		0xE8000000
+#ifdef CONFIG_A4M2K
+#define CONFIG_SYS_CS5_SIZE		0x00100000
+#else
 #define CONFIG_SYS_CS5_SIZE		0x00010000
+#endif
 /* 00000000 00110010 1 0 1 1 10 01 00 00 0 0 0 0  = 0x0032B900 */
 #define CONFIG_SYS_CS5_CFG		0x0032B900
 
 #ifdef CONFIG_SYS_PCICLK_EQUALS_IPBCLK_DIV2	/* for pci_clk  = 66 MHz */
 #define CONFIG_SYS_BOOTCS_CFG		0x0006F900
-#define CONFIG_SYS_CS1_CFG		0x0004FB00
+#define CONFIG_SYS_CS1_CFG		0x0008FD00
 #define CONFIG_SYS_CS2_CFG		0x0006F90C
 #else	/* for pci_clk = 33 MHz */
 #define CONFIG_SYS_BOOTCS_CFG		0x0002F900
@@ -311,17 +321,25 @@
 #define CONFIG_SYS_OS_BASE	0xfc080000
 #define CONFIG_SYS_FDT_BASE	0xfc060000
 
-#define xstr(s)	str(s)
-#define str(s)	#s
-
 #define	CONFIG_EXTRA_ENV_SETTINGS					\
+	"hostname=" __stringify(CONFIG_HOSTNAME) "\0"			\
 	"netdev=eth0\0"							\
 	"verify=no\0"							\
+	"loadaddr=200000\0"						\
+	"kernel_addr=" __stringify(CONFIG_SYS_OS_BASE) "\0"		\
+	"kernel_addr_r=1000000\0"					\
+	"fdt_addr=" __stringify(CONFIG_SYS_FDT_BASE) "\0"		\
+	"fdt_addr_r=1800000\0"						\
+	"bootfile=" __stringify(CONFIG_HOSTNAME) "/uImage\0"		\
+	"fdtfile=" __stringify(CONFIG_HOSTNAME) "/"			\
+		__stringify(CONFIG_HOSTNAME) ".dtb\0"			\
+	"rootpath=/opt/eldk-5.2.1/powerpc/"				\
+		"core-image-minimal-mtdutils-dropbear-generic\0"	\
 	"consoledev=ttyPSC0\0"						\
 	"nfsargs=setenv bootargs root=/dev/nfs rw "			\
 		"nfsroot=${serverip}:${rootpath}\0"			\
 	"ramargs=setenv bootargs root=/dev/ram rw\0"			\
-	"mtdargs=setenv bootargs root=/dev/mtdblock4 rw rootfstype=jffs2\0"\
+	"mtdargs=setenv bootargs root=/dev/mtdblock4 rw rootfstype=jffs2\0" \
 	"addip=setenv bootargs ${bootargs} "				\
 		"ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}"	\
 		":${hostname}:${netdev}:off panic=1\0"			\
@@ -332,18 +350,18 @@
 	"flash_mtd=run mtdargs addip addtty;"				\
 		"bootm ${kernel_addr} - ${fdtaddr}\0"			\
 	"flash_self=run ramargs addip addtty;"				\
-		"bootm ${kernel_addr} ${ramdisk_addr} ${fdtaddr}\0"	\
-	"net_nfs=sleep 2; tftp ${loadaddr} ${bootfile};"		\
-		"tftp c00000 ${fdtfile};"				\
+		"bootm ${kernel_addr} ${ramdisk_addr} ${fdt_addr}\0"	\
+	"net_nfs=tftp ${kernel_addr_r} ${bootfile};"			\
+		"tftp ${fdt_addr_r} ${fdtfile};"			\
 		"run nfsargs addip addtty;"				\
-		"bootm ${loadaddr} - c00000\0"				\
-	"load=tftp ${loadaddr} u-boot.bin\0"				\
+		"bootm ${kernel_addr_r} - ${fdt_addr_r}\0"		\
+	"load=tftp ${loadaddr} " __stringify(CONFIG_HOSTNAME)		\
+		"/u-boot-img.bin\0"					\
 	"update=protect off fc000000 fc03ffff; "			\
-		"era fc000000 fc03ffff; cp.b ${loadaddr} fc000000 40000\0"\
+		"era fc000000 fc03ffff; cp.b ${loadaddr} fc000000 40000\0" \
 	"upd=run load;run update\0"					\
-	"fdtaddr=" xstr(CONFIG_SYS_FDT_BASE) "\0"			\
-	"fdtfile=dtbFile\0"						\
-	"kernel_addr=" xstr(CONFIG_SYS_OS_BASE) "\0"			\
+	"bootdelay=3\0"							\
+	"bootcmd=run net_nfs\0"						\
 	""
 
 #define CONFIG_BOOTCOMMAND	"run flash_mtd"
@@ -353,6 +371,7 @@
  */
 #define CONFIG_SPL
 #define CONFIG_SPL_FRAMEWORK
+#define CONFIG_SPL_BOARD_INIT
 #define CONFIG_SPL_NOR_SUPPORT
 #define CONFIG_SPL_TEXT_BASE	0xfc000000
 #define	CONFIG_SPL_START_S_PATH	"arch/powerpc/cpu/mpc5xxx"