mpc83xx: Add support for the MPC8349E-mITX-GP

Add support for the MPC8349E-mITX-GP, a stripped-down version of the
MPC8349E-mITX.  Bonus features include support for low-boot (BMS bit in
HRCW is 0) for the ITX and a README for the ITX and the ITX-GP.
Signed-off-by: NTimur Tabi <timur@freescale.com>

MAINTAINERS

@@ -350,6 +350,7 @@ John Zhan <zhanz@sinovee.com>
 Timur Tabi <timur@freescale.com>
 
 	MPC8349E-mITX		MPC8349
+	MPC8349E-mITX-GP	MPC8349
 
 Kim Phillips <kim.phillips@freescale.com>
 

MAKEALL

@@ -132,8 +132,8 @@ LIST_8260="	\
 #########################################################################
 
 LIST_83xx="	\
-	MPC832XEMDS	MPC8349EMDS	MPC8349ITX	MPC8360EMDS	\
-	sbc8349		TQM834x						\
+	MPC832XEMDS	MPC8349EMDS	MPC8349ITX	MPC8349ITXGP    \
+        MPC8360EMDS     sbc8349		TQM834x						\
 "
 
 

Makefile

@@ -1642,8 +1642,19 @@ MPC832XEMDS_SLAVE_config:	unconfig
 MPC8349EMDS_config:	unconfig
 	@$(MKCONFIG) $(@:_config=) ppc mpc83xx mpc8349emds
 
-MPC8349ITX_config:	unconfig
-	@$(MKCONFIG) $(@:_config=) ppc mpc83xx mpc8349itx
+MPC8349ITX_config \
+MPC8349ITX_LOWBOOT_config \
+MPC8349ITXGP_config:	unconfig
+	@mkdir -p $(obj)include
+	@mkdir -p $(obj)board/mpc8349itx
+	@echo "#define CONFIG_$(subst _LOWBOOT,,$(@:_config=))" >> $(obj)include/config.h
+	@if [ "$(findstring GP,$@)" ] ; then \
+		echo "TEXT_BASE = 0xFE000000" >$(obj)board/mpc8349itx/config.tmp ; \
+	fi
+	@if [ "$(findstring LOWBOOT,$@)" ] ; then \
+		echo "TEXT_BASE = 0xFE000000" >$(obj)board/mpc8349itx/config.tmp ; \
+	fi
+	@$(MKCONFIG) -a -n $(@:_config=) MPC8349ITX ppc mpc83xx mpc8349itx
 
 MPC8360EMDS_config \
 MPC8360EMDS_HOST_33_config \

board/mpc8349itx/config.mk

@@ -21,10 +21,14 @@
 #
 
 #
-# MPC8349ITX
+# MPC8349E-mITX and MPC8349E-mITX-GP
 #
 
+sinclude $(OBJTREE)/board/$(BOARDDIR)/config.tmp
+
+ifndef TEXT_BASE
 TEXT_BASE  =   0xFEF00000
+endif
 
 ifneq ($(OBJTREE),$(SRCTREE))
 # We are building u-boot in a separate directory, use generated

board/mpc8349itx/mpc8349itx.c

@@ -168,7 +168,11 @@ long int initdram(int board_type)
 
 int checkboard(void)
 {
+#ifdef CONFIG_MPC8349ITX
 	puts("Board: Freescale MPC8349E-mITX\n");
+#else
+	puts("Board: Freescale MPC8349E-mITX-GP\n");
+#endif
 
 	return 0;
 }
@@ -181,6 +185,7 @@ int checkboard(void)
  */
 int misc_init_f(void)
 {
+#ifdef CONFIG_VSC7385
 	volatile u32 *vsc7385_cpuctrl;
 
 	/* 0x1c0c0 is the VSC7385 CPU Control (CPUCTRL) Register.  The power up
@@ -200,6 +205,7 @@ int misc_init_f(void)
 
 	vsc7385_cpuctrl = (volatile u32 *)(CFG_VSC7385_BASE + 0x1c0c0);
 	*vsc7385_cpuctrl |= 0x0c;
+#endif
 
 #ifdef CONFIG_COMPACT_FLASH
 	/* UPM Table Configuration Code */
@@ -269,9 +275,19 @@ int misc_init_r(void)
 #ifdef CFG_I2C_EEPROM_ADDR
 	static u8 eeprom_data[] =	/* HRCW data */
 	{
-		0xaa, 0x55, 0xaa,
-		0x7c, 0x02, 0x40, 0x05, 0x04, 0x00, 0x00,
-		0x7c, 0x02, 0x41, 0xb4, 0x60, 0xa0, 0x00,
+		0xAA, 0x55, 0xAA,       /* Preamble */
+		0x7C, 		        /* ACS=0, BYTE_EN=1111, CONT=1 */
+		0x02, 0x40, 	        /* RCWL ADDR=0x0_0900 */
+		(CFG_HRCW_LOW >> 24) & 0xFF,
+		(CFG_HRCW_LOW >> 16) & 0xFF,
+		(CFG_HRCW_LOW >> 8) & 0xFF,
+		CFG_HRCW_LOW & 0xFF,
+		0x7C, 		        /* ACS=0, BYTE_EN=1111, CONT=1 */
+		0x02, 0x41,	        /* RCWH ADDR=0x0_0904 */
+		(CFG_HRCW_HIGH >> 24) & 0xFF,
+		(CFG_HRCW_HIGH >> 16) & 0xFF,
+		(CFG_HRCW_HIGH >> 8) & 0xFF,
+		CFG_HRCW_HIGH & 0xFF
 	};
 
 	u8 data[sizeof(eeprom_data)];

doc/README.mpc8349itx

+Freescale MPC8349E-mITX and MPC8349E-mITX-GP Boards
+---------------------------------------------------
+
+1.	Board Description
+
+	The MPC8349E-mITX and MPC8349E-mITX-GP are reference boards featuring
+	the Freescale MPC8349E processor in a Mini-ITX form factor.
+
+	The MPC8349E-mITX-GP is an MPC8349E-mITX with the following differences:
+
+	A) One 8MB on-board flash EEPROM chip, instead of two.
+	B) No SATA controller
+	C) No Compact Flash slot
+	D) No Mini-PCI slot
+	E) No Vitesse 7385 5-port Ethernet switch
+	F) No 4-port USB Type-A interface
+
+2.	Board Switches and Jumpers
+
+2.0 	Descriptions for all of the board jumpers can be found in the User
+	Guide.  Of particular interest to U-Boot developers is jumper J22:
+
+	Pos.	Name		Default		Description
+	-----------------------------------------------------------------------
+	A	LGPL0		ON (0)          HRCW source, bit 0
+	B       LGPL1           ON (0)          HRCW source, bit 1
+	C       LGPL3           ON (0)		HRCW source, bit 2
+	D       LGPL5           OFF (1)         PCI_SYNC_OUT frequency
+	E       BOOT1           ON (0)          Flash EEPROM boot device
+	F       PCI_M66EN       ON (0)          PCI 66MHz enable
+	G       I2C-WP          ON (0)          I2C EEPROM write protection
+	H       F_WP            OFF (1)         Flash EEPROM write protection
+
+	Jumper J22.E is only for the ITX, and it decides the configuration
+	of the flash chips.  If J22.E is ON (i.e. jumpered), then flash chip
+	U4 is located at address FE000000 and flash chip U7 is at FE800000.
+	If J22.E is OFF, then U7 is at FE000000 and U4 is at FE800000.
+
+	For U-Boot development, J22.E can be used to switch back-and-forth
+	between two U-Boot images.
+
+3.	Memory Map
+
+3.1.	The memory map should look pretty much like this:
+
+	0x0000_0000 - 0x0FFF_FFFF DDR SDRAM (256 MB)
+	0x8000_0000 - 0x9FFF_FFFF PCI1 memory space (512 MB)
+	0xA000_0000 - 0xBFFF_FFFF PCI2 memory space (512 MB)
+	0xE000_0000 - 0xEFFF_FFFF IMMR (1 MB)
+	0xE200_0000 - 0xE2FF_FFFF PCI1 I/O space (16 MB)
+	0xE300_0000 - 0xE3FF_FFFF PCI2 I/O space (16 MB)
+	0xF000_0000 - 0xF000_FFFF Compact Flash (ITX only)
+	0xF001_0000 - 0xF001_FFFF Local bus expansion slot
+	0xF800_0000 - 0xF801_FFFF Vitesse 7385 Parallel Interface (ITX only)
+	0xFE00_0000 - 0xFE7F_FFFF First 8MB bank of Flash memory
+	0xFE80_0000 - 0xFEFF_FFFF Second 8MB bank of Flash memory (ITX only)
+
+3.2	Flash EEPROM layout.
+
+	On the ITX, jumper J22.E is used to determine which flash chips are
+	at which address.  When J22.E is switched, addresses from FE000000
+	to FE7FFFFF are swapped with addresses from FE800000 to FEFFFFFF.
+
+	On the ITX, at the normal boot address (aka HIGHBOOT):
+
+	FE00_0000	HRCW
+	FE70_0000	Alternative U-Boot image
+	FE80_0000	Alternative HRCW
+	FEF0_0000	U-Boot image
+	FEFF_FFFF	End of flash
+
+	On the ITX, at the low boot address (LOWBOOT)
+
+	FE00_0000	HRCW and U-Boot image
+	FE04_0000	U-Boot environment variables
+	FE80_0000	Alternative HRCW and U-Boot image
+	FEFF_FFFF	End of flash
+
+	On the ITX-GP, the only option is LOWBOOT and there is only one chip
+
+	FE00_0000	HRCW and U-Boot image
+	FE04_0000	U-Boot environment variables
+	F7FF_FFFF	End of flash
+
+4. Definitions
+
+4.1 Explanation of NEW definitions in:
+
+	include/configs/MPC8349ITX.h
+
+	CONFIG_MPC83XX	    	MPC83xx family
+	CONFIG_MPC8349	    	MPC8349 specific
+	CONFIG_MPC8349ITX		MPC8349E-mITX
+	CONFIG_MPC8349ITXGP		MPC8349E-mITX-GP
+
+5. Compilation
+
+	Assuming you're using BASH shell:
+
+		export CROSS_COMPILE=your-cross-compile-prefix
+		cd u-boot
+		make distclean
+
+		make MPC8349ITX_config
+	or:
+		make MPC8349ITXGP_config
+	or:
+		make MPC8349ITX_LOWBOOT_config
+
+		make
+
+6. Downloading and Flashing Images
+
+6.1 Download via tftp:
+
+	tftp $loadaddr <uboot>
+
+	where "<uboot>" is the path and filename, on the TFTP server, of
+	the U-Boot image.
+
+6.1 Reflash U-Boot Image using U-Boot
+
+	setenv uboot <uboot>
+	run tftpflash
+
+	where "<uboot>" is the path and filename, on the TFTP server, of
+	the U-Boot image.
+
+6.2 Using the HRCW to switch between two different U-Boot images on the ITX
+
+	Because the ITX has 16MB of flash, it is possible to keep two U-Boot
+	images in flash, and use the HRCW to specify which one is to be used
+	when the board boots.  This trick is especially effective with a
+	hardware debugger that can override the HRCW, such as the BDI-2000.
+
+	When the BMS bit in the HRCW is 0, the ITX will boot the U-Boot image
+	at address FE000000.  When the BMS bit is 1, the ITX will boot the
+	image at address FEF00000.
+
+	Therefore, just put a U-Boot image at both FE000000 and FEF00000 and
+	change the BMS bit whenever you want to boot the other image.
+
+	Step-by-step instructions:
+
+	1) Build an ITX image to be loaded at FEF00000
+
+		make distclean
+		make MPC8349ITX_config
+		make
+
+	2) Take the u-boot.bin image and flash it at FEF00000.
+
+		tftp $loadaddr u-boot.bin
+		protect off all
+		erase FEF00000 +$filesize
+		cp.b $loadaddr FEF00000 $filesize
+
+	3) Build an ITX image to be loaded at FE000000
+
+		make distclean
+		make MPC8349ITX_LOWBOOT_config
+		make
+
+	4) Take the u-boot.bin image and flash it at FE000000.
+
+		tftp $loadaddr u-boot.bin
+		protect off FE000000 +$filesize
+		erase FE000000 +$filesize
+		cp.b $loadaddr FE000000 $filesize
+
+	The HRCW in flash is currently set to boot the image at FE000000.
+
+	If you have a hardware debugger, configure it to set the HRCW to
+	B460A000 04040000 if you want to boot the image at FEF00000, or set
+	it to B060A000 04040000 if you want to boot the image at FE000000.
+
+	To change the HRCW in flash to boot the image at FEF00000, use these
+	U-Boot commands:
+
+		cp.b FE000000 1000 10000	; copy 1st flash sector to 1000
+		mw.b 1020 b4 8			; modify BMS bit
+		protect off FE000000 +10000
+		erase FE000000 +10000
+		cp.b 1000 FE000000 10000
+
+7. Notes
+	1) The console baudrate for MPC8349EITX is 115200bps.

include/mpc83xx.h

@@ -825,6 +825,47 @@
 #define OR_SDRAM_EAD			0x00000001
 #define OR_SDRAM_EAD_SHIFT		0
 
+#define OR_AM_32KB			0xFFFF8000
+#define OR_AM_64KB			0xFFFF0000
+#define OR_AM_128KB			0xFFFE0000
+#define OR_AM_256KB			0xFFFC0000
+#define OR_AM_512KB			0xFFF80000
+#define OR_AM_1MB			0xFFF00000
+#define OR_AM_2MB			0xFFE00000
+#define OR_AM_4MB			0xFFC00000
+#define OR_AM_8MB			0xFF800000
+#define OR_AM_16MB			0xFF000000
+#define OR_AM_32MB			0xFE000000
+#define OR_AM_64MB			0xFC000000
+#define OR_AM_128MB			0xF8000000
+#define OR_AM_256MB			0xF0000000
+#define OR_AM_512MB			0xE0000000
+#define OR_AM_1GB			0xC0000000
+#define OR_AM_2GB			0x80000000
+#define OR_AM_4GB			0x00000000
+
+#define LBLAWAR_EN			0x80000000
+#define LBLAWAR_4KB			0x0000000B
+#define LBLAWAR_8KB			0x0000000C
+#define LBLAWAR_16KB			0x0000000D
+#define LBLAWAR_32KB			0x0000000E
+#define LBLAWAR_64KB			0x0000000F
+#define LBLAWAR_128KB			0x00000010
+#define LBLAWAR_256KB			0x00000011
+#define LBLAWAR_512KB			0x00000012
+#define LBLAWAR_1MB			0x00000013
+#define LBLAWAR_2MB			0x00000014
+#define LBLAWAR_4MB			0x00000015
+#define LBLAWAR_8MB			0x00000016
+#define LBLAWAR_16MB			0x00000017
+#define LBLAWAR_32MB			0x00000018
+#define LBLAWAR_64MB			0x00000019
+#define LBLAWAR_128MB			0x0000001A
+#define LBLAWAR_256MB			0x0000001B
+#define LBLAWAR_512MB			0x0000001C
+#define LBLAWAR_1GB			0x0000001D
+#define LBLAWAR_2GB			0x0000001E
+
 /* LBCR - Local Bus Configuration Register
  */
 #define LBCR_LDIS			0x80000000