m68knommu: add WilFire and WildfireMod board support
Steve Bennett [Thu, 1 May 2008 02:17:08 +0000 (12:17 +1000)]
This patch adds linux-2.6.x kernel support for the Intec Automation
ColdFire 5282-based boards, the WildFire and WildFireMod

Signed-Off-By: Steve Bennett <steveb@workware.net.au>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/m68knommu/platform/528x/config.c

index 036e1b7..dfdb5c2 100644 (file)
 #include <asm/mcfuart.h>
 #include <asm/mcfqspi.h>
 
+#ifdef CONFIG_MTD_PARTITIONS
+#include <linux/mtd/partitions.h>
+#endif
+
 /***************************************************************************/
 
 void coldfire_reset(void);
+static void coldfire_qspi_cs_control(u8 cs, u8 command);
+
+/***************************************************************************/
+
+#if defined(CONFIG_SPI)
+
+#if defined(CONFIG_WILDFIRE)
+#define SPI_NUM_CHIPSELECTS    0x02
+#define SPI_PAR_VAL            0x07  /* Enable DIN, DOUT, CLK */
+#define SPI_CS_MASK            0x18
+
+#define FLASH_BLOCKSIZE                (1024*64)
+#define FLASH_NUMBLOCKS                16
+#define FLASH_TYPE             "m25p80"
+
+#define M25P80_CS              0
+#define MMC_CS                 1
+
+#ifdef CONFIG_MTD_PARTITIONS
+static struct mtd_partition stm25p_partitions[] = {
+       /* sflash */
+       [0] = {
+               .name = "stm25p80",
+               .offset = 0x00000000,
+               .size = FLASH_BLOCKSIZE * FLASH_NUMBLOCKS,
+               .mask_flags = 0
+       }
+};
+
+#endif
+
+#elif defined(CONFIG_WILDFIREMOD)
+
+#define SPI_NUM_CHIPSELECTS    0x08
+#define SPI_PAR_VAL            0x07  /* Enable DIN, DOUT, CLK */
+#define SPI_CS_MASK            0x78
+
+#define FLASH_BLOCKSIZE                (1024*64)
+#define FLASH_NUMBLOCKS                64
+#define FLASH_TYPE             "m25p32"
+/* Reserve 1M for the kernel parition */
+#define FLASH_KERNEL_SIZE   (1024 * 1024)
+
+#define M25P80_CS              5
+#define MMC_CS                 6
+
+#ifdef CONFIG_MTD_PARTITIONS
+static struct mtd_partition stm25p_partitions[] = {
+       /* sflash */
+       [0] = {
+               .name = "kernel",
+               .offset = FLASH_BLOCKSIZE * FLASH_NUMBLOCKS - FLASH_KERNEL_SIZE,
+               .size = FLASH_KERNEL_SIZE,
+               .mask_flags = 0
+       },
+       [1] = {
+               .name = "image",
+               .offset = 0x00000000,
+               .size = FLASH_BLOCKSIZE * FLASH_NUMBLOCKS - FLASH_KERNEL_SIZE,
+               .mask_flags = 0
+       },
+       [2] = {
+               .name = "all",
+               .offset = 0x00000000,
+               .size = FLASH_BLOCKSIZE * FLASH_NUMBLOCKS,
+               .mask_flags = 0
+       }
+};
+#endif
+
+#else
+#define SPI_NUM_CHIPSELECTS    0x04
+#define SPI_PAR_VAL            0x7F  /* Enable DIN, DOUT, CLK, CS0 - CS4 */
+#endif
+
+#ifdef MMC_CS
+static struct coldfire_spi_chip flash_chip_info = {
+       .mode = SPI_MODE_0,
+       .bits_per_word = 16,
+       .del_cs_to_clk = 17,
+       .del_after_trans = 1,
+       .void_write_data = 0
+};
+
+static struct coldfire_spi_chip mmc_chip_info = {
+       .mode = SPI_MODE_0,
+       .bits_per_word = 16,
+       .del_cs_to_clk = 17,
+       .del_after_trans = 1,
+       .void_write_data = 0xFFFF
+};
+#endif
+
+#ifdef M25P80_CS
+static struct flash_platform_data stm25p80_platform_data = {
+       .name = "ST M25P80 SPI Flash chip",
+#ifdef CONFIG_MTD_PARTITIONS
+       .parts = stm25p_partitions,
+       .nr_parts = sizeof(stm25p_partitions) / sizeof(*stm25p_partitions),
+#endif
+       .type = FLASH_TYPE
+};
+#endif
+
+static struct spi_board_info spi_board_info[] __initdata = {
+#ifdef M25P80_CS
+       {
+               .modalias = "m25p80",
+               .max_speed_hz = 16000000,
+               .bus_num = 1,
+               .chip_select = M25P80_CS,
+               .platform_data = &stm25p80_platform_data,
+               .controller_data = &flash_chip_info
+       },
+#endif
+#ifdef MMC_CS
+       {
+               .modalias = "mmc_spi",
+               .max_speed_hz = 16000000,
+               .bus_num = 1,
+               .chip_select = MMC_CS,
+               .controller_data = &mmc_chip_info
+       }
+#endif
+};
+
+static struct coldfire_spi_master coldfire_master_info = {
+       .bus_num = 1,
+       .num_chipselect = SPI_NUM_CHIPSELECTS,
+       .irq_source = MCF5282_QSPI_IRQ_SOURCE,
+       .irq_vector = MCF5282_QSPI_IRQ_VECTOR,
+       .irq_mask = ((0x01 << MCF5282_QSPI_IRQ_SOURCE) | 0x01),
+       .irq_lp = 0x2B,  /* Level 5 and Priority 3 */
+       .par_val = SPI_PAR_VAL,
+       .cs_control = coldfire_qspi_cs_control,
+};
+
+static struct resource coldfire_spi_resources[] = {
+       [0] = {
+               .name = "qspi-par",
+               .start = MCF5282_QSPI_PAR,
+               .end = MCF5282_QSPI_PAR,
+               .flags = IORESOURCE_MEM
+       },
+
+       [1] = {
+               .name = "qspi-module",
+               .start = MCF5282_QSPI_QMR,
+               .end = MCF5282_QSPI_QMR + 0x18,
+               .flags = IORESOURCE_MEM
+       },
+
+       [2] = {
+               .name = "qspi-int-level",
+               .start = MCF5282_INTC0 + MCFINTC_ICR0 + MCF5282_QSPI_IRQ_SOURCE,
+               .end = MCF5282_INTC0 + MCFINTC_ICR0 + MCF5282_QSPI_IRQ_SOURCE,
+               .flags = IORESOURCE_MEM
+       },
+
+       [3] = {
+               .name = "qspi-int-mask",
+               .start = MCF5282_INTC0 + MCFINTC_IMRL,
+               .end = MCF5282_INTC0 + MCFINTC_IMRL,
+               .flags = IORESOURCE_MEM
+       }
+};
+
+static struct platform_device coldfire_spi = {
+       .name = "spi_coldfire",
+       .id = -1,
+       .resource = coldfire_spi_resources,
+       .num_resources = ARRAY_SIZE(coldfire_spi_resources),
+       .dev = {
+               .platform_data = &coldfire_master_info,
+       }
+};
+
+static void coldfire_qspi_cs_control(u8 cs, u8 command)
+{
+       u8 cs_bit = ((0x01 << cs) << 3) & SPI_CS_MASK;
+
+#if defined(CONFIG_WILDFIRE)
+       u8 cs_mask = ~(((0x01 << cs) << 3) & SPI_CS_MASK);
+#endif
+#if defined(CONFIG_WILDFIREMOD)
+       u8 cs_mask = (cs << 3) & SPI_CS_MASK;
+#endif
+
+       /*
+        * Don't do anything if the chip select is not
+        * one of the port qs pins.
+        */
+       if (command & QSPI_CS_INIT) {
+#if defined(CONFIG_WILDFIRE)
+               MCF5282_GPIO_DDRQS  |= cs_bit;
+               MCF5282_GPIO_PQSPAR &= ~cs_bit;
+#endif
+
+#if defined(CONFIG_WILDFIREMOD)
+               MCF5282_GPIO_DDRQS  |= SPI_CS_MASK;
+               MCF5282_GPIO_PQSPAR &= ~SPI_CS_MASK;
+#endif
+       }
+
+       if (command & QSPI_CS_ASSERT) {
+               MCF5282_GPIO_PORTQS &= ~SPI_CS_MASK;
+               MCF5282_GPIO_PORTQS |= cs_mask;
+       } else if (command & QSPI_CS_DROP) {
+               MCF5282_GPIO_PORTQS |= SPI_CS_MASK;
+       }
+}
+
+static int __init spi_dev_init(void)
+{
+       int retval;
+
+       retval = platform_device_register(&coldfire_spi);
+       if (retval < 0)
+               return retval;
+
+       if (ARRAY_SIZE(spi_board_info))
+               retval = spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
+
+       return retval;
+}
+
+#endif /* CONFIG_SPI */
 
 /***************************************************************************/
 
@@ -111,10 +342,43 @@ void mcf_autovector(unsigned int vec)
 
 /***************************************************************************/
 
+#ifdef CONFIG_WILDFIRE
+void wildfire_halt(void)
+{
+       writeb(0, 0x30000007);
+       writeb(0x2, 0x30000007);
+}
+#endif
+
+#ifdef CONFIG_WILDFIREMOD
+void wildfiremod_halt(void)
+{
+       printk(KERN_INFO "WildFireMod hibernating...\n");
+
+       /* Set portE.5 to Digital IO */
+       MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));
+
+       /* Make portE.5 an output */
+       MCF5282_GPIO_DDRE |= (1 << 5);
+
+       /* Now toggle portE.5 from low to high */
+       MCF5282_GPIO_PORTE &= ~(1 << 5);
+       MCF5282_GPIO_PORTE |= (1 << 5);
+
+       printk(KERN_EMERG "Failed to hibernate. Halting!\n");
+}
+#endif
+
 void __init config_BSP(char *commandp, int size)
 {
        mcf_disableall();
-       mach_reset = coldfire_reset;
+
+#ifdef CONFIG_WILDFIRE
+       mach_halt = wildfire_halt;
+#endif
+#ifdef CONFIG_WILDFIREMOD
+       mach_halt = wildfiremod_halt;
+#endif
 }
 
 /***************************************************************************/