Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 236 insertions, 0 deletions

diff --git a/arch/ppc/platforms/lite5200.c b/arch/ppc/platforms/lite5200.c
new file mode 100644
index 00000000000..b604cf8b3ca
--- /dev/null
+++ b/arch/ppc/platforms/lite5200.c
@@ -0,0 +1,236 @@
+/*
+ * arch/ppc/platforms/lite5200.c
+ *
+ * Platform support file for the Freescale LITE5200 based on MPC52xx.
+ * A maximum of this file should be moved to syslib/mpc52xx_?????
+ * so that new platform based on MPC52xx need a minimal platform file
+ * ( avoid code duplication )
+ *
+ * 
+ * Maintainer : Sylvain Munaut <tnt@246tNt.com>
+ *
+ * Based on the 2.4 code written by Kent Borg,
+ * Dale Farnsworth <dale.farnsworth@mvista.com> and
+ * Wolfgang Denk <wd@denx.de>
+ * 
+ * Copyright 2004-2005 Sylvain Munaut <tnt@246tNt.com>
+ * Copyright 2003 Motorola Inc.
+ * Copyright 2003 MontaVista Software Inc.
+ * Copyright 2003 DENX Software Engineering (wd@denx.de)
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/config.h>
+#include <linux/initrd.h>
+#include <linux/seq_file.h>
+#include <linux/kdev_t.h>
+#include <linux/root_dev.h>
+#include <linux/console.h>
+#include <linux/module.h>
+
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <asm/mpc52xx.h>
+#include <asm/ppc_sys.h>
+
+#include <syslib/mpc52xx_pci.h>
+
+
+extern int powersave_nap;
+
+/* Board data given by U-Boot */
+bd_t __res;
+EXPORT_SYMBOL(__res);	/* For modules */
+
+
+/* ======================================================================== */
+/* Platform specific code                                                   */
+/* ======================================================================== */
+
+/* Supported PSC function in "preference" order */
+struct mpc52xx_psc_func mpc52xx_psc_functions[] = {
+		{       .id     = 0,
+			.func   = "uart",
+		},
+		{       .id     = -1,   /* End entry */
+			.func   = NULL,
+		}
+	};
+
+
+static int
+lite5200_show_cpuinfo(struct seq_file *m)
+{
+	seq_printf(m, "machine\t\t: Freescale LITE5200\n");
+	return 0;
+}
+
+#ifdef CONFIG_PCI
+static int
+lite5200_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+	return (pin == 1) && (idsel==24) ? MPC52xx_IRQ0 : -1;
+}
+#endif
+
+static void __init
+lite5200_setup_cpu(void)
+{
+	struct mpc52xx_cdm  __iomem *cdm;
+	struct mpc52xx_gpio __iomem *gpio;
+	struct mpc52xx_intr __iomem *intr;
+	struct mpc52xx_xlb  __iomem *xlb;
+
+	u32 port_config;
+	u32 intr_ctrl;
+
+	/* Map zones */
+	cdm  = ioremap(MPC52xx_PA(MPC52xx_CDM_OFFSET), MPC52xx_CDM_SIZE);
+	gpio = ioremap(MPC52xx_PA(MPC52xx_GPIO_OFFSET), MPC52xx_GPIO_SIZE);
+	xlb  = ioremap(MPC52xx_PA(MPC52xx_XLB_OFFSET), MPC52xx_XLB_SIZE);
+	intr = ioremap(MPC52xx_PA(MPC52xx_INTR_OFFSET), MPC52xx_INTR_SIZE);
+
+	if (!cdm || !gpio || !xlb || !intr) {
+		printk("lite5200.c: Error while mapping CDM/GPIO/XLB/INTR during"
+				"lite5200_setup_cpu\n");
+		goto unmap_regs;
+	}
+
+	/* Use internal 48 Mhz */
+	out_8(&cdm->ext_48mhz_en, 0x00);
+	out_8(&cdm->fd_enable, 0x01);
+	if (in_be32(&cdm->rstcfg) & 0x40)	/* Assumes 33Mhz clock */
+		out_be16(&cdm->fd_counters, 0x0001);
+	else
+		out_be16(&cdm->fd_counters, 0x5555);
+
+	/* Get port mux config */
+	port_config = in_be32(&gpio->port_config);
+
+	/* 48Mhz internal, pin is GPIO */
+	port_config &= ~0x00800000;
+
+	/* USB port */
+	port_config &= ~0x00007000;	/* Differential mode - USB1 only */
+	port_config |=  0x00001000;
+
+	/* Commit port config */
+	out_be32(&gpio->port_config, port_config);
+
+	/* Configure the XLB Arbiter */
+	out_be32(&xlb->master_pri_enable, 0xff);
+	out_be32(&xlb->master_priority, 0x11111111);
+
+	/* Enable ram snooping for 1GB window */
+	out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_SNOOP);
+	out_be32(&xlb->snoop_window, MPC52xx_PCI_TARGET_MEM | 0x1d);
+
+	/* IRQ[0-3] setup : IRQ0     - Level Active Low  */
+	/*                  IRQ[1-3] - Level Active High */
+	intr_ctrl = in_be32(&intr->ctrl);
+	intr_ctrl &= ~0x00ff0000;
+	intr_ctrl |=  0x00c00000;
+	out_be32(&intr->ctrl, intr_ctrl);
+
+	/* Unmap reg zone */
+unmap_regs:
+	if (cdm)  iounmap(cdm);
+	if (gpio) iounmap(gpio);
+	if (xlb)  iounmap(xlb);
+	if (intr) iounmap(intr);
+}
+
+static void __init
+lite5200_setup_arch(void)
+{
+	/* CPU & Port mux setup */
+	lite5200_setup_cpu();
+
+#ifdef CONFIG_PCI
+	/* PCI Bridge setup */
+	mpc52xx_find_bridges();
+#endif
+}
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+              unsigned long r6, unsigned long r7)
+{
+	/* Generic MPC52xx platform initialization */
+	/* TODO Create one and move a max of stuff in it.
+	   Put this init in the syslib */
+
+	struct bi_record *bootinfo = find_bootinfo();
+
+	if (bootinfo)
+		parse_bootinfo(bootinfo);
+	else {
+		/* Load the bd_t board info structure */
+		if (r3)
+			memcpy((void*)&__res,(void*)(r3+KERNELBASE),
+					sizeof(bd_t));
+
+#ifdef CONFIG_BLK_DEV_INITRD
+		/* Load the initrd */
+		if (r4) {
+			initrd_start = r4 + KERNELBASE;
+			initrd_end = r5 + KERNELBASE;
+		}
+#endif
+
+		/* Load the command line */
+		if (r6) {
+			*(char *)(r7+KERNELBASE) = 0;
+			strcpy(cmd_line, (char *)(r6+KERNELBASE));
+		}
+	}
+
+	/* PPC Sys identification */
+	identify_ppc_sys_by_id(mfspr(SPRN_SVR));
+
+	/* BAT setup */
+	mpc52xx_set_bat();
+
+	/* No ISA bus by default */
+	isa_io_base		= 0;
+	isa_mem_base		= 0;
+
+	/* Powersave */
+	/* This is provided as an example on how to do it. But you
+	   need to be aware that NAP disable bus snoop and that may
+	   be required for some devices to work properly, like USB ... */
+	/* powersave_nap = 1; */
+
+
+	/* Setup the ppc_md struct */
+	ppc_md.setup_arch	= lite5200_setup_arch;
+	ppc_md.show_cpuinfo	= lite5200_show_cpuinfo;
+	ppc_md.show_percpuinfo	= NULL;
+	ppc_md.init_IRQ		= mpc52xx_init_irq;
+	ppc_md.get_irq		= mpc52xx_get_irq;
+
+#ifdef CONFIG_PCI
+	ppc_md.pci_map_irq	= lite5200_map_irq;
+#endif
+
+	ppc_md.find_end_of_memory = mpc52xx_find_end_of_memory;
+	ppc_md.setup_io_mappings  = mpc52xx_map_io;
+
+	ppc_md.restart		= mpc52xx_restart;
+	ppc_md.power_off	= mpc52xx_power_off;
+	ppc_md.halt		= mpc52xx_halt;
+
+		/* No time keeper on the LITE5200 */
+	ppc_md.time_init	= NULL;
+	ppc_md.get_rtc_time	= NULL;
+	ppc_md.set_rtc_time	= NULL;
+
+	ppc_md.calibrate_decr	= mpc52xx_calibrate_decr;
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+	ppc_md.progress		= mpc52xx_progress;
+#endif
+}
+