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Message-Id: <200805010217.m412H87U004127@goober>
Date: Thu, 1 May 2008 12:17:08 +1000
From: Greg Ungerer <gerg@...pgear.com>
To: torvalds@...ux-foundation.org
Cc: akpm@...ux-foundation.org, gerg@...inux.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] m68knommu: add WilFire and WildfireMod board support
From: Steve Bennett <steveb@...kware.net.au>
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@...kware.net.au>
Signed-off-by: Greg Ungerer <gerg@...inux.org>
---
diff -Naurp linux-2.6.25/arch/m68knommu/platform/528x/config.c linux-2.6.25-uc0/arch/m68knommu/platform/528x/config.c
--- linux-2.6.25/arch/m68knommu/platform/528x/config.c 2008-04-17 12:49:44.000000000 +1000
+++ linux-2.6.25-uc0/arch/m68knommu/platform/528x/config.c 2008-04-22 14:48:44.000000000 +1000
@@ -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
}
/***************************************************************************/
--
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