patch-2.4.22 linux-2.4.22/arch/arm/mach-sa1100/cep.c

• Lines: 124
• Date: 2003-08-25 04:44:39.000000000 -0700
• Orig file: linux-2.4.21/arch/arm/mach-sa1100/cep.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/arch/arm/mach-sa1100/cep.c linux-2.4.22/arch/arm/mach-sa1100/cep.c
@@ -0,0 +1,123 @@
+/*
+ * linux/arch/arm/mach-sa1100/cep.c
+ *
+ * Author: Matthias Gorjup
+ *
+ * This file contains all Cep - specific tweaks.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/serial_core.h>
+
+#include <asm/hardware.h>
+#include <asm/setup.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/serial_sa1100.h>
+
+#include "generic.h"
+
+
+extern void convert_to_tag_list(struct param_struct *params, int mem_init);
+
+static void __init
+fixup_cep(struct machine_desc *desc, struct param_struct *params,
+	      char **cmdline, struct meminfo *mi)
+{
+	struct tag *t = (struct tag *)params;
+
+
+	/*
+	 * Apparantly bootldr uses a param_struct.  Groan.
+	 */
+	if (t->hdr.tag != ATAG_CORE)
+		convert_to_tag_list(params, 1);
+
+	if (t->hdr.tag != ATAG_CORE) {
+		t->hdr.tag = ATAG_CORE;
+		t->hdr.size = tag_size(tag_core);
+		t->u.core.flags = 0;
+		t->u.core.pagesize = PAGE_SIZE;
+		t->u.core.rootdev = RAMDISK_MAJOR << 8 | 0;
+		t = tag_next(t);
+
+		t->hdr.tag = ATAG_MEM;
+		t->hdr.size = tag_size(tag_mem32);
+		t->u.mem.start = 0xc0000000;
+		t->u.mem.size  = 32 * 1024 * 1024;
+		t = tag_next(t);
+
+
+		t->hdr.tag = ATAG_RAMDISK;
+		t->hdr.size = tag_size(tag_ramdisk);
+		t->u.ramdisk.flags = 1;
+		t->u.ramdisk.size = 8192;
+		t->u.ramdisk.start = 0;
+		t = tag_next(t);
+
+		t->hdr.tag = ATAG_INITRD;
+		t->hdr.size = tag_size(tag_initrd);
+		t->u.initrd.start = 0xc0800000;
+		t->u.initrd.size = 3 * 1024 * 1024;
+		t = tag_next(t);
+
+		t->hdr.tag = ATAG_NONE;
+		t->hdr.size = 0;
+	}
+}
+
+
+static struct map_desc cep_io_desc[] __initdata = {
+ /* virtual     physical    length      domain     r  w  c  b */
+  { 0xe8000000, 0x00000000, 0x02000000, DOMAIN_IO, 0, 1, 0, 0 }, /* Flash bank 0 */
+  LAST_DESC
+};
+
+static void __init cep_map_io(void)
+{
+
+	sa1100_map_io();
+	iotable_init(cep_io_desc);
+
+	sa1100_register_uart(0, 1);	/* com port */
+	sa1100_register_uart(2, 3);	/* radio module */
+
+	/*
+	 * Ensure that these pins are set as outputs and are driving
+	 * logic 0.  This ensures that we won't inadvertently toggle
+	 * the WS latch in the CPLD, and we don't float causing
+	 * excessive power drain.  --rmk
+	 */
+	GPDR |= GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM;
+	GPCR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM;
+
+	/*
+	 * Set up registers for sleep mode.
+	 */
+	PWER = PWER_GPIO0;
+	PGSR = 0;
+	PCFR = 0;
+	PSDR = 0;
+}
+
+
+MACHINE_START(CEP, "Iskratel Cep")
+	BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
+	BOOT_PARAMS(0xc0000100)
+	FIXUP(fixup_cep)
+	MAPIO(cep_map_io)
+	INITIRQ(sa1100_init_irq)
+MACHINE_END