diff options
Diffstat (limited to 'arch/m68knommu/platform/528x/config.c')
| -rw-r--r-- | arch/m68knommu/platform/528x/config.c | 266 |
1 files changed, 265 insertions, 1 deletions
diff --git a/arch/m68knommu/platform/528x/config.c b/arch/m68knommu/platform/528x/config.c index 036e1b7..dfdb5c2 100644 --- a/arch/m68knommu/platform/528x/config.c +++ b/arch/m68knommu/platform/528x/config.c @@ -26,9 +26,240 @@ #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 } /***************************************************************************/ |