* Dale Farnsworth <dale.farnsworth@mvista.com> and
* Wolfgang Denk <wd@denx.de>
*
- * Copyright 2004 Sylvain Munaut <tnt@246tNt.com>
+ * 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)
#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/ocp.h>
#include <asm/mpc52xx.h>
+#include <asm/ppc_sys.h>
+#include <asm/machdep.h>
+#include <syslib/mpc52xx_pci.h>
+
+
+extern int powersave_nap;
/* Board data given by U-Boot */
bd_t __res;
/* ======================================================================== */
-/* OCP device definition */
-/* For board/shared resources like PSCs */
+/* Platform specific code */
/* ======================================================================== */
-/* Be sure not to load conficting devices : e.g. loading the UART drivers for
- * PSC1 and then also loading a AC97 for this same PSC.
- * For details about how to create an entry, look in the doc of the concerned
- * driver ( eg drivers/serial/mpc52xx_uart.c for the PSC in uart mode )
- */
-struct ocp_def board_ocp[] = {
- {
- .vendor = OCP_VENDOR_FREESCALE,
- .function = OCP_FUNC_PSC_UART,
- .index = 0,
- .paddr = MPC52xx_PSC1,
- .irq = MPC52xx_PSC1_IRQ,
- .pm = OCP_CPM_NA,
- },
- { /* Terminating entry */
- .vendor = OCP_VENDOR_INVALID
- }
-};
-
+/* Supported PSC function in "preference" order */
+struct mpc52xx_psc_func mpc52xx_psc_functions[] = {
+ { .id = 0,
+ .func = "uart",
+ },
+ { .id = -1, /* End entry */
+ .func = NULL,
+ }
+ };
-/* ======================================================================== */
-/* Platform specific code */
-/* ======================================================================== */
static int
-icecube_show_cpuinfo(struct seq_file *m)
+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
-icecube_setup_arch(void)
+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;
+ }
- /* Add board OCP definitions */
- mpc52xx_add_board_devices(board_ocp);
+ /* 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
initrd_end = r5 + KERNELBASE;
}
#endif
-
+
/* Load the command line */
if (r6) {
*(char *)(r7+KERNELBASE) = 0;
}
}
+ /* PPC Sys identification */
+ identify_ppc_sys_by_id(mfspr(SPRN_SVR));
+
/* BAT setup */
mpc52xx_set_bat();
-
- /* No ISA bus AFAIK */
+
+ /* No ISA bus by default */
+#ifdef CONFIG_PCI
isa_io_base = 0;
isa_mem_base = 0;
+#endif
+
+ /* 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 = icecube_setup_arch;
- ppc_md.show_cpuinfo = icecube_show_cpuinfo;
+ 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 IceCube */
+
+ /* 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;
git://git.onelab.eu / linux-2.6.git / blobdiff