| /***************************************************************************/ |
| |
| /* |
| * linux/arch/m68knommu/platform/528x/config.c |
| * |
| * Sub-architcture dependant initialization code for the Motorola |
| * 5280 and 5282 CPUs. |
| * |
| * Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com) |
| * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com) |
| */ |
| |
| /***************************************************************************/ |
| |
| #include <linux/kernel.h> |
| #include <linux/param.h> |
| #include <linux/init.h> |
| #include <linux/interrupt.h> |
| #include <linux/platform_device.h> |
| #include <linux/spi/spi.h> |
| #include <linux/spi/flash.h> |
| #include <linux/io.h> |
| #include <asm/machdep.h> |
| #include <asm/coldfire.h> |
| #include <asm/mcfsim.h> |
| #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 */ |
| |
| /***************************************************************************/ |
| |
| static struct mcf_platform_uart m528x_uart_platform[] = { |
| { |
| .mapbase = MCF_MBAR + MCFUART_BASE1, |
| .irq = MCFINT_VECBASE + MCFINT_UART0, |
| }, |
| { |
| .mapbase = MCF_MBAR + MCFUART_BASE2, |
| .irq = MCFINT_VECBASE + MCFINT_UART0 + 1, |
| }, |
| { |
| .mapbase = MCF_MBAR + MCFUART_BASE3, |
| .irq = MCFINT_VECBASE + MCFINT_UART0 + 2, |
| }, |
| { }, |
| }; |
| |
| static struct platform_device m528x_uart = { |
| .name = "mcfuart", |
| .id = 0, |
| .dev.platform_data = m528x_uart_platform, |
| }; |
| |
| static struct platform_device *m528x_devices[] __initdata = { |
| &m528x_uart, |
| }; |
| |
| /***************************************************************************/ |
| |
| #define INTC0 (MCF_MBAR + MCFICM_INTC0) |
| |
| static void __init m528x_uart_init_line(int line, int irq) |
| { |
| u8 port; |
| u32 imr; |
| |
| if ((line < 0) || (line > 2)) |
| return; |
| |
| /* level 6, line based priority */ |
| writeb(0x30+line, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line); |
| |
| imr = readl(INTC0 + MCFINTC_IMRL); |
| imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1); |
| writel(imr, INTC0 + MCFINTC_IMRL); |
| |
| /* make sure PUAPAR is set for UART0 and UART1 */ |
| if (line < 2) { |
| port = readb(MCF_MBAR + MCF5282_GPIO_PUAPAR); |
| port |= (0x03 << (line * 2)); |
| writeb(port, MCF_MBAR + MCF5282_GPIO_PUAPAR); |
| } |
| } |
| |
| static void __init m528x_uarts_init(void) |
| { |
| const int nrlines = ARRAY_SIZE(m528x_uart_platform); |
| int line; |
| |
| for (line = 0; (line < nrlines); line++) |
| m528x_uart_init_line(line, m528x_uart_platform[line].irq); |
| } |
| |
| /***************************************************************************/ |
| |
| void mcf_disableall(void) |
| { |
| *((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH)) = 0xffffffff; |
| *((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL)) = 0xffffffff; |
| } |
| |
| /***************************************************************************/ |
| |
| void mcf_autovector(unsigned int vec) |
| { |
| /* Everything is auto-vectored on the 5272 */ |
| } |
| |
| /***************************************************************************/ |
| |
| #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(); |
| |
| #ifdef CONFIG_WILDFIRE |
| mach_halt = wildfire_halt; |
| #endif |
| #ifdef CONFIG_WILDFIREMOD |
| mach_halt = wildfiremod_halt; |
| #endif |
| } |
| |
| /***************************************************************************/ |
| |
| static int __init init_BSP(void) |
| { |
| m528x_uarts_init(); |
| platform_add_devices(m528x_devices, ARRAY_SIZE(m528x_devices)); |
| return 0; |
| } |
| |
| arch_initcall(init_BSP); |
| |
| /***************************************************************************/ |