ppc4xx: Add USB OHCI support to AMCC Canyonlands 460EX eval board

This patch adds USB OHCI support to the Canyonlands board port. It also
enables EXT2 support.

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

board/amcc/canyonlands/canyonlands.c

@@ -26,6 +26,7 @@
 #include <asm/io.h>
 #include <asm/mmu.h>
 #include <asm/4xx_pcie.h>
+#include <asm/gpio.h>
 
 extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
 
@@ -100,6 +101,19 @@ int board_early_init_f(void)
 
 	mtsdr(SDR0_SRST1, 0);	/* Pull AHB out of reset default=1 */
 
+	/* Setup PLB4-AHB bridge based on the system address map */
+	mtdcr(AHB_TOP, 0x8000004B);
+	mtdcr(AHB_BOT, 0x8000004B);
+
+	/*
+	 * Configure USB-STP pins as alternate and not GPIO
+	 * It seems to be neccessary to configure the STP pins as GPIO
+	 * input at powerup (perhaps while USB reset is asserted). So
+	 * we configure those pins to their "real" function now.
+	 */
+	gpio_config(16, GPIO_OUT, GPIO_ALT1, GPIO_OUT_1);
+	gpio_config(19, GPIO_OUT, GPIO_ALT1, GPIO_OUT_1);
+
 	return 0;
 }
 

board/amcc/canyonlands/init.S

@@ -88,6 +88,9 @@ tlbtab:
 	/* TLB-entry for Local Configuration registers => peripherals */
 	tlbentry(CFG_LOCAL_CONF_REGS, SZ_16M, CFG_LOCAL_CONF_REGS, 4, AC_R|AC_W|AC_X|SA_G|SA_I)
 
+	/* AHB: Internal USB Peripherals (USB, SATA) */
+	tlbentry(CFG_AHB_BASE, SZ_1M, 0xbff00000, 4, AC_R|AC_W|AC_X|SA_G|SA_I)
+
 	tlbtab_end
 
 #if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)

include/configs/canyonlands.h

@@ -79,6 +79,8 @@
 
 #define CFG_PERIPHERAL_BASE	0xEF600000	/* internal peripherals */
 
+#define CFG_AHB_BASE		0xE2000000	/* internal AHB peripherals	*/
+
 #define CFG_MONITOR_BASE	TEXT_BASE
 #define CFG_MONITOR_LEN		(384 * 1024)	/* Reserve 384 kB for Monitor */
 #define CFG_MALLOC_LEN		(512 * 1024)	/* Reserve 512 kB for malloc()*/
@@ -270,6 +272,21 @@
 
 #define CFG_RX_ETH_BUFFER	32	/* Number of ethernet rx buffers & descriptors */
 
+/*-----------------------------------------------------------------------
+ * USB-OHCI
+ *----------------------------------------------------------------------*/
+#define CONFIG_USB_OHCI_NEW
+#define CONFIG_USB_STORAGE
+#undef CFG_OHCI_BE_CONTROLLER		/* 460EX has little endian descriptors	*/
+#define CFG_OHCI_SWAP_REG_ACCESS	/* 460EX has little endian register	*/
+#define CFG_OHCI_USE_NPS		/* force NoPowerSwitching mode		*/
+#define CFG_USB_OHCI_REGS_BASE	(CFG_AHB_BASE | 0xd0000)
+#define CFG_USB_OHCI_SLOT_NAME	"ppc440"
+#define CFG_USB_OHCI_MAX_ROOT_PORTS 15
+
+/*-----------------------------------------------------------------------
+ * Default environment
+ *----------------------------------------------------------------------*/
 #define CONFIG_PREBOOT	"echo;"	\
 	"echo Type \"run flash_nfs\" to mount root filesystem over NFS;" \
 	"echo"
@@ -344,6 +361,7 @@
 #define CONFIG_CMD_DIAG
 #define CONFIG_CMD_EEPROM
 #define CONFIG_CMD_ELF
+#define CONFIG_CMD_EXT2
 #define CONFIG_CMD_FAT
 #define CONFIG_CMD_I2C
 #define CONFIG_CMD_IRQ
@@ -355,6 +373,12 @@
 #define CONFIG_CMD_PING
 #define CONFIG_CMD_REGINFO
 #define CONFIG_CMD_SDRAM
+#define CONFIG_CMD_USB
+
+/* Partitions */
+#define CONFIG_MAC_PARTITION
+#define CONFIG_DOS_PARTITION
+#define CONFIG_ISO_PARTITION
 
 /*-----------------------------------------------------------------------
  * Miscellaneous configurable options
@@ -466,28 +490,28 @@
 #define CFG_4xx_GPIO_TABLE { /*	  Out		  GPIO	Alternate1	Alternate2	Alternate3 */ \
 {											\
 /* GPIO Core 0 */									\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO0	GMC1TxD(0)	USB2HostD(0)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO1	GMC1TxD(1)	USB2HostD(1)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO2	GMC1TxD(2)	USB2HostD(2)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO3	GMC1TxD(3)	USB2HostD(3)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO4	GMC1TxD(4)	USB2HostD(4)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO5	GMC1TxD(5)	USB2HostD(5)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO6	GMC1TxD(6)	USB2HostD(6)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO7	GMC1TxD(7)	USB2HostD(7)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO8	GMC1RxD(0)	USB2OTGD(0)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO9	GMC1RxD(1)	USB2OTGD(1)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO10 GMC1RxD(2)	USB2OTGD(2)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO11 GMC1RxD(3)	USB2OTGD(3)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO12 GMC1RxD(4)	USB2OTGD(4)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO13 GMC1RxD(5)	USB2OTGD(5)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO14 GMC1RxD(6)	USB2OTGD(6)	*/	\
-{GPIO0_BASE, GPIO_BI , GPIO_ALT2, GPIO_OUT_0}, /* GPIO15 GMC1RxD(7)	USB2OTGD(7)	*/	\
-{GPIO0_BASE, GPIO_OUT, GPIO_ALT2, GPIO_OUT_0}, /* GPIO16 GMC1TxER	USB2HostStop	*/	\
-{GPIO0_BASE, GPIO_IN , GPIO_ALT2, GPIO_OUT_0}, /* GPIO17 GMC1CD		USB2HostNext	*/	\
-{GPIO0_BASE, GPIO_IN , GPIO_ALT2, GPIO_OUT_0}, /* GPIO18 GMC1RxER	USB2HostDir	*/	\
-{GPIO0_BASE, GPIO_OUT, GPIO_ALT2, GPIO_OUT_0}, /* GPIO19 GMC1TxEN	USB2OTGStop	*/	\
-{GPIO0_BASE, GPIO_IN , GPIO_ALT2, GPIO_OUT_0}, /* GPIO20 GMC1CRS	USB2OTGNext	*/	\
-{GPIO0_BASE, GPIO_IN , GPIO_ALT2, GPIO_OUT_0}, /* GPIO21 GMC1RxDV	USB2OTGDir	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO0	GMC1TxD(0)	USB2HostD(0)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO1	GMC1TxD(1)	USB2HostD(1)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO2	GMC1TxD(2)	USB2HostD(2)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO3	GMC1TxD(3)	USB2HostD(3)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO4	GMC1TxD(4)	USB2HostD(4)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO5	GMC1TxD(5)	USB2HostD(5)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO6	GMC1TxD(6)	USB2HostD(6)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO7	GMC1TxD(7)	USB2HostD(7)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO8	GMC1RxD(0)	USB2OTGD(0)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO9	GMC1RxD(1)	USB2OTGD(1)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO10 GMC1RxD(2)	USB2OTGD(2)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO11 GMC1RxD(3)	USB2OTGD(3)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO12 GMC1RxD(4)	USB2OTGD(4)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO13 GMC1RxD(5)	USB2OTGD(5)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO14 GMC1RxD(6)	USB2OTGD(6)	*/	\
+{GPIO0_BASE, GPIO_BI , GPIO_ALT1, GPIO_OUT_0}, /* GPIO15 GMC1RxD(7)	USB2OTGD(7)	*/	\
+{GPIO0_BASE, GPIO_IN , GPIO_SEL,  GPIO_OUT_0}, /* GPIO16 GMC1TxER	USB2HostStop	*/	\
+{GPIO0_BASE, GPIO_IN , GPIO_ALT1, GPIO_OUT_0}, /* GPIO17 GMC1CD		USB2HostNext	*/	\
+{GPIO0_BASE, GPIO_IN , GPIO_ALT1, GPIO_OUT_0}, /* GPIO18 GMC1RxER	USB2HostDir	*/	\
+{GPIO0_BASE, GPIO_IN,  GPIO_SEL,  GPIO_OUT_0}, /* GPIO19 GMC1TxEN	USB2OTGStop	*/	\
+{GPIO0_BASE, GPIO_IN , GPIO_ALT1, GPIO_OUT_0}, /* GPIO20 GMC1CRS	USB2OTGNext	*/	\
+{GPIO0_BASE, GPIO_IN , GPIO_ALT1, GPIO_OUT_0}, /* GPIO21 GMC1RxDV	USB2OTGDir	*/	\
 {GPIO0_BASE, GPIO_IN , GPIO_ALT1, GPIO_OUT_0}, /* GPIO22 NFRDY				*/	\
 {GPIO0_BASE, GPIO_IN , GPIO_ALT1, GPIO_OUT_0}, /* GPIO23 NFREN				*/	\
 {GPIO0_BASE, GPIO_IN , GPIO_ALT1, GPIO_OUT_0}, /* GPIO24 NFWEN				*/	\

include/ppc440.h

@@ -3355,6 +3355,9 @@
 #define SDR0_DDR0_DDRM_DECODE(n)	((((unsigned long)(n))>>29)&0x03)
 #define SDR0_DDR0_TUNE_ENCODE(n)	((((unsigned long)(n))&0x2FF)<<0)
 #define SDR0_DDR0_TUNE_DECODE(n)	((((unsigned long)(n))>>0)&0x2FF)
+
+#define AHB_TOP			0xA4
+#define AHB_BOT			0xA5
 #endif /* CONFIG_460EX || CONFIG_460GT */
 
 #define SDR0_SDCS_SDD			(0x80000000 >> 31)