patch-2.4.22 linux-2.4.22/arch/arm/mach-at91rm9200/core.c
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- Lines: 184
- Date:
2003-08-25 04:44:39.000000000 -0700
- Orig file:
linux-2.4.21/arch/arm/mach-at91rm9200/core.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.21/arch/arm/mach-at91rm9200/core.c linux-2.4.22/arch/arm/mach-at91rm9200/core.c
@@ -0,0 +1,183 @@
+/*
+ * linux/arch/arm/mach-at91rm9200/core.c
+ *
+ * Copyright (c) 2003 SAN People
+ * Copyright (c) 2003 ATMEL
+ * Copyright (c) Rick Bronson
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+
+#include <asm/hardware.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/arch/hardware.h>
+
+/*
+ * System peripheral registers mapped at virtual address.
+ */
+AT91PS_SYS AT91_SYS = (AT91PS_SYS) AT91C_VA_BASE_SYS;
+
+static struct map_desc at91rm9200_io_desc[] __initdata = {
+ /* virtual, physical, length, domain, r, w, c, b */
+ { AT91C_VA_BASE_SYS, AT91C_BASE_SYS, SZ_4K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_SPI, AT91C_BASE_SPI, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_SSC2, AT91C_BASE_SSC2, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_SSC1, AT91C_BASE_SSC1, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_SSC0, AT91C_BASE_SSC0, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_US3, AT91C_BASE_US3, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_US2, AT91C_BASE_US2, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_US1, AT91C_BASE_US1, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_US0, AT91C_BASE_US0, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_EMAC, AT91C_BASE_EMAC, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_TWI, AT91C_BASE_TWI, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_MCI, AT91C_BASE_MCI, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_UDP, AT91C_BASE_UDP, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_TCB1, AT91C_BASE_TCB1, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ { AT91C_VA_BASE_TCB0, AT91C_BASE_TCB0, SZ_16K, DOMAIN_IO, 0, 1, 0, 0},
+ LAST_DESC
+};
+
+/* Interrupt configuration */
+static AT91_REG at91rm9200_irq_smr[] __initdata = {
+ (AT91_SMR_FIQ), /* FIQ */
+ (AT91_SMR_SYS), /* System Peripherals */
+ (AT91_SMR_PIOA), /* PIO A */
+ (AT91_SMR_PIOB), /* PIO B */
+ (AT91_SMR_PIOC), /* PIO C */
+ (AT91_SMR_PIOD), /* PIO D */
+ (AT91_SMR_US0), /* USART 0 */
+ (AT91_SMR_US1), /* USART 1 */
+ (AT91_SMR_US2), /* USART 2 */
+ (AT91_SMR_US3), /* USART 3 */
+ (AT91_SMR_MCI), /* Multimedia Card */
+ (AT91_SMR_UDP), /* USB Device */
+ (AT91_SMR_TWI), /* Two-wire interface */
+ (AT91_SMR_SPI), /* SPI */
+ (AT91_SMR_SSC0), /* Sync Serial 0 */
+ (AT91_SMR_SSC1), /* Sync Serial 1 */
+ (AT91_SMR_SSC2), /* Sync Serial 2 */
+ (AT91_SMR_TC0), /* TC 0 */
+ (AT91_SMR_TC1), /* TC 1 */
+ (AT91_SMR_TC2), /* TC 2 */
+ (AT91_SMR_TC3), /* TC 3 */
+ (AT91_SMR_TC4), /* TC 4 */
+ (AT91_SMR_TC5), /* TC 5 */
+ (AT91_SMR_UHP), /* USB Host */
+ (AT91_SMR_EMAC), /* Ethernet */
+ (AT91_SMR_IRQ0), /* IRQ 0 */
+ (AT91_SMR_IRQ1), /* IRQ 1 */
+ (AT91_SMR_IRQ2), /* IRQ 2 */
+ (AT91_SMR_IRQ3), /* IRQ 3 */
+ (AT91_SMR_IRQ4), /* IRQ 4 */
+ (AT91_SMR_IRQ5), /* IRQ 5 */
+ (AT91_SMR_IRQ6) /* IRQ 6 */
+};
+
+/* Architecture-specific fixups */
+static void __init at91rm9200_fixup(struct machine_desc *desc, struct param_struct *unused,
+ char **cmdline, struct meminfo *mi)
+{
+#ifdef CONFIG_BLK_DEV_INITRD
+ ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
+ setup_ramdisk(1, 0, 0, CONFIG_BLK_DEV_RAM_SIZE);
+// setup_initrd(0xc0100000, 3*1024*1024);
+#endif
+}
+
+extern void at91_register_uart(int idx, int port);
+
+void __init at91rm9200_map_io(void)
+{
+ int serial[AT91C_NR_UART] = AT91C_UART_MAP;
+ int i;
+
+ iotable_init(at91rm9200_io_desc);
+
+ /* Register UARTs */
+ for (i = 0; i < AT91C_NR_UART; i++) {
+ if (serial[i] >= 0)
+ at91_register_uart(i, serial[i]);
+ }
+}
+
+static void at91rm9200_mask_irq(unsigned int irq)
+{
+ /* Disable interrupt on AIC */
+ AT91_SYS->AIC_IDCR = 1 << irq;
+}
+
+static void at91rm9200_unmask_irq(unsigned int irq)
+{
+ /* Enable interrupt on AIC */
+ AT91_SYS->AIC_IECR = 1 << irq;
+}
+
+void __init at91rm9200_init_irq(void)
+{
+ unsigned int i;
+
+ /*
+ * The IVR is used by macro get_irqnr_and_base to read and verify.
+ * The irq number is NR_IRQS when a spurious interrupt has occured.
+ */
+ for (i = 0; i < NR_IRQS; i++) {
+ /* Put irq number in Source Vector Register: */
+ AT91_SYS->AIC_SVR[i] = i;
+ /* Store the Source Mode Register as defined in table above */
+ AT91_SYS->AIC_SMR[i] = at91rm9200_irq_smr[i];
+
+ irq_desc[i].valid = 1;
+ irq_desc[i].mask_ack = at91rm9200_mask_irq;
+ irq_desc[i].mask = at91rm9200_mask_irq;
+ irq_desc[i].unmask = at91rm9200_unmask_irq;
+
+ /* Perform 8 End Of Interrupt Command to make sure AIC will not Lock out nIRQ */
+ if (i < 8)
+ AT91_SYS->AIC_EOICR = AT91_SYS->AIC_EOICR;
+ }
+
+ /* Spurious Interrupt ID in Spurious Vector Register is NR_IRQS
+ * When there is no current interrupt, the IRQ Vector Register reads the value stored in AIC_SPU
+ */
+ AT91_SYS->AIC_SPU = NR_IRQS;
+
+ /* No debugging in AIC: Debug (Protect) Control Register */
+ AT91_SYS->AIC_DCR = 0;
+
+ /* Disable and clear all interrupts initially */
+ AT91_SYS->AIC_IDCR = 0xFFFFFFFF;
+ AT91_SYS->AIC_ICCR = 0xFFFFFFFF;
+}
+
+MACHINE_START(AT91RM9200, "ATMEL AT91RM9200")
+ MAINTAINER("SAN People / ATMEL")
+ BOOT_MEM(AT91_SDRAM_BASE, AT91C_BASE_SYS, AT91C_VA_BASE_SYS)
+ BOOT_PARAMS(AT91_SDRAM_BASE + 0x100)
+ FIXUP(at91rm9200_fixup)
+ MAPIO(at91rm9200_map_io)
+ INITIRQ(at91rm9200_init_irq)
+MACHINE_END
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