/*
- * 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
* 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 <asm/pci-bridge.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
+#ifdef CONFIG_LITE5200B
+static int
+lite5200_map_irq(struct pci_dev *dev, unsigned char idsel,
+ unsigned char pin)
+{
+ static char pci_irq_table[][4] =
+ /*
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ {MPC52xx_IRQ0, MPC52xx_IRQ1, MPC52xx_IRQ2, MPC52xx_IRQ3},
+ {MPC52xx_IRQ1, MPC52xx_IRQ2, MPC52xx_IRQ3, MPC52xx_IRQ0},
+ };
+
+ const long min_idsel = 24, max_idsel = 25, irqs_per_slot = 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+}
+#else /* Original Lite */
+static int
+lite5200_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ return (pin == 1) && (idsel==24) ? MPC52xx_IRQ0 : -1;
+}
+#endif
+#endif
+
static void __init
-icecube_setup_arch(void)
+lite5200_setup_cpu(void)
{
+ struct mpc52xx_gpio __iomem *gpio;
+ struct mpc52xx_intr __iomem *intr;
+
+ u32 port_config;
+ u32 intr_ctrl;
- /* Add board OCP definitions */
- mpc52xx_add_board_devices(board_ocp);
+ /* Map zones */
+ gpio = ioremap(MPC52xx_PA(MPC52xx_GPIO_OFFSET), MPC52xx_GPIO_SIZE);
+ intr = ioremap(MPC52xx_PA(MPC52xx_INTR_OFFSET), MPC52xx_INTR_SIZE);
+
+ if (!gpio || !intr) {
+ printk(KERN_ERR __FILE__ ": "
+ "Error while mapping GPIO/INTR during "
+ "lite5200_setup_cpu\n");
+ goto unmap_regs;
+ }
+
+ /* 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;
+
+ /* ATA CS is on csb_4/5 */
+ port_config &= ~0x03000000;
+ port_config |= 0x01000000;
+
+ /* Commit port config */
+ out_be32(&gpio->port_config, port_config);
+
+ /* IRQ[0-3] setup */
+ intr_ctrl = in_be32(&intr->ctrl);
+ intr_ctrl &= ~0x00ff0000;
+#ifdef CONFIG_LITE5200B
+ /* IRQ[0-3] Level Active Low */
+ intr_ctrl |= 0x00ff0000;
+#else
+ /* IRQ0 Level Active Low
+ * IRQ[1-3] Level Active High */
+ intr_ctrl |= 0x00c00000;
+#endif
+ out_be32(&intr->ctrl, intr_ctrl);
+
+ /* Unmap reg zone */
+unmap_regs:
+ if (gpio) iounmap(gpio);
+ if (intr) iounmap(intr);
+}
+
+static void __init
+lite5200_setup_arch(void)
+{
+ /* CPU & Port mux setup */
+ mpc52xx_setup_cpu(); /* Generic */
+ lite5200_setup_cpu(); /* Platform specific */
+
+#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