This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / 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 (file)
index 0000000..843cf88
--- /dev/null
+++ b/arch/ppc/syslib/ppc83xx_setup.c
@@ -0,0 +1,166 @@
+/*
+ * 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 <asm/delay.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)
+{
+       volatile unsigned char __iomem *reg;
+       unsigned char tmp;
+
+       reg = ioremap(BCSR_PHYS_ADDR, BCSR_SIZE);
+
+       local_irq_disable();
+
+       /*
+        * Unlock the BCSR bits so a PRST will update the contents.
+        * Otherwise the reset asserts but doesn't clear.
+        */
+       tmp = in_8(reg + BCSR_MISC_REG3_OFF);
+       tmp |= BCSR_MISC_REG3_CNFLOCK; /* low true, high false */
+       out_8(reg + BCSR_MISC_REG3_OFF, tmp);
+
+       /*
+        * Trigger a reset via a low->high transition of the
+        * PORESET bit.
+        */
+       tmp = in_8(reg + BCSR_MISC_REG2_OFF);
+       tmp &= ~BCSR_MISC_REG2_PORESET;
+       out_8(reg + BCSR_MISC_REG2_OFF, tmp);
+
+       udelay(1);
+
+       tmp |= BCSR_MISC_REG2_PORESET;
+       out_8(reg + BCSR_MISC_REG2_OFF, tmp);
+
+       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 */