From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@ppc970.osdl.org>
Date: Sat, 16 Apr 2005 15:20:36 -0700
Subject: Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
---
 arch/ppc/syslib/ppc83xx_setup.c | 138 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 arch/ppc/syslib/ppc83xx_setup.c

(limited to 'arch/ppc/syslib/ppc83xx_setup.c')

diff --git a/arch/ppc/syslib/ppc83xx_setup.c b/arch/ppc/syslib/ppc83xx_setup.c
new file mode 100644
index 00000000000..c28f9d67948
--- /dev/null
+++ b/arch/ppc/syslib/ppc83xx_setup.c
@@ -0,0 +1,138 @@
+/*
+ * arch/ppc/syslib/ppc83xx_setup.c
+ *
+ * MPC83XX common board code
+ *
+ * Maintainer: Kumar Gala <kumar.gala@freescale.com>
+ *
+ * Copyright 2005 Freescale Semiconductor Inc.
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/serial.h>
+#include <linux/tty.h>	/* for linux/serial_core.h */
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/mpc83xx.h>
+#include <asm/mmu.h>
+#include <asm/ppc_sys.h>
+#include <asm/kgdb.h>
+
+#include <syslib/ppc83xx_setup.h>
+
+phys_addr_t immrbar;
+
+/* Return the amount of memory */
+unsigned long __init
+mpc83xx_find_end_of_memory(void)
+{
+        bd_t *binfo;
+
+        binfo = (bd_t *) __res;
+
+        return binfo->bi_memsize;
+}
+
+long __init
+mpc83xx_time_init(void)
+{
+#define SPCR_OFFS   0x00000110
+#define SPCR_TBEN   0x00400000
+
+	bd_t *binfo = (bd_t *)__res;
+	u32 *spcr = ioremap(binfo->bi_immr_base + SPCR_OFFS, 4);
+
+	*spcr |= SPCR_TBEN;
+
+	iounmap(spcr);
+
+	return 0;
+}
+
+/* The decrementer counts at the system (internal) clock freq divided by 4 */
+void __init
+mpc83xx_calibrate_decr(void)
+{
+        bd_t *binfo = (bd_t *) __res;
+        unsigned int freq, divisor;
+
+	freq = binfo->bi_busfreq;
+	divisor = 4;
+	tb_ticks_per_jiffy = freq / HZ / divisor;
+	tb_to_us = mulhwu_scale_factor(freq / divisor, 1000000);
+}
+
+#ifdef CONFIG_SERIAL_8250
+void __init
+mpc83xx_early_serial_map(void)
+{
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+	struct uart_port serial_req;
+#endif
+	struct plat_serial8250_port *pdata;
+	bd_t *binfo = (bd_t *) __res;
+	pdata = (struct plat_serial8250_port *) ppc_sys_get_pdata(MPC83xx_DUART);
+
+	/* Setup serial port access */
+	pdata[0].uartclk = binfo->bi_busfreq;
+	pdata[0].mapbase += binfo->bi_immr_base;
+	pdata[0].membase = ioremap(pdata[0].mapbase, 0x100);
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+	memset(&serial_req, 0, sizeof (serial_req));
+	serial_req.iotype = SERIAL_IO_MEM;
+	serial_req.mapbase = pdata[0].mapbase;
+	serial_req.membase = pdata[0].membase;
+	serial_req.regshift = 0;
+
+	gen550_init(0, &serial_req);
+#endif
+
+	pdata[1].uartclk = binfo->bi_busfreq;
+	pdata[1].mapbase += binfo->bi_immr_base;
+	pdata[1].membase = ioremap(pdata[1].mapbase, 0x100);
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+	/* Assume gen550_init() doesn't modify serial_req */
+	serial_req.mapbase = pdata[1].mapbase;
+	serial_req.membase = pdata[1].membase;
+
+	gen550_init(1, &serial_req);
+#endif
+}
+#endif
+
+void
+mpc83xx_restart(char *cmd)
+{
+	local_irq_disable();
+	for(;;);
+}
+
+void
+mpc83xx_power_off(void)
+{
+	local_irq_disable();
+	for(;;);
+}
+
+void
+mpc83xx_halt(void)
+{
+	local_irq_disable();
+	for(;;);
+}
+
+/* PCI SUPPORT DOES NOT EXIT, MODEL after ppc85xx_setup.c */
-- 
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