diff options
| -rw-r--r-- | arch/powerpc/Kconfig | 8 | ||||
| -rw-r--r-- | arch/powerpc/platforms/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/efika/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/efika/efika.h | 19 | ||||
| -rw-r--r-- | arch/powerpc/platforms/efika/pci.c | 119 | ||||
| -rw-r--r-- | arch/powerpc/platforms/efika/setup.c | 149 |
6 files changed, 297 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 7107d47..a41d191 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -386,6 +386,14 @@ config PPC_CHRP select PPC_UDBG_16550 default y +config PPC_EFIKA + bool "bPlan Efika 5k2. MPC5200B based computer" + depends on PPC_MULTIPLATFORM && PPC32 + select PPC_RTAS + select RTAS_PROC + select PPC_MPC52xx + default y + config PPC_PMAC bool "Apple PowerMac based machines" depends on PPC_MULTIPLATFORM diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile index e58fa95..7ad2673 100644 --- a/arch/powerpc/platforms/Makefile +++ b/arch/powerpc/platforms/Makefile @@ -5,6 +5,7 @@ ifeq ($(CONFIG_PPC64),y) obj-$(CONFIG_PPC_PMAC) += powermac/ endif endif +obj-$(CONFIG_PPC_EFIKA) += efika/ obj-$(CONFIG_PPC_CHRP) += chrp/ obj-$(CONFIG_4xx) += 4xx/ obj-$(CONFIG_PPC_83xx) += 83xx/ diff --git a/arch/powerpc/platforms/efika/Makefile b/arch/powerpc/platforms/efika/Makefile new file mode 100644 index 0000000..17b2a78 --- /dev/null +++ b/arch/powerpc/platforms/efika/Makefile @@ -0,0 +1 @@ +obj-y += setup.o mpc52xx.o pci.o diff --git a/arch/powerpc/platforms/efika/efika.h b/arch/powerpc/platforms/efika/efika.h new file mode 100644 index 0000000..2f060fd --- /dev/null +++ b/arch/powerpc/platforms/efika/efika.h @@ -0,0 +1,19 @@ +/* + * Efika 5K2 platform setup - Header file + * + * Copyright (C) 2006 bplan GmbH + * + * 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. + * + */ + +#ifndef __ARCH_POWERPC_EFIKA__ +#define __ARCH_POWERPC_EFIKA__ + +#define EFIKA_PLATFORM_NAME "Efika" + +extern void __init efika_pcisetup(void); + +#endif diff --git a/arch/powerpc/platforms/efika/pci.c b/arch/powerpc/platforms/efika/pci.c new file mode 100644 index 0000000..62e05b2 --- /dev/null +++ b/arch/powerpc/platforms/efika/pci.c @@ -0,0 +1,119 @@ + +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/string.h> +#include <linux/init.h> + +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/prom.h> +#include <asm/machdep.h> +#include <asm/sections.h> +#include <asm/pci-bridge.h> +#include <asm/rtas.h> + +#include "efika.h" + +#ifdef CONFIG_PCI +/* + * Access functions for PCI config space using RTAS calls. + */ +static int rtas_read_config(struct pci_bus *bus, unsigned int devfn, int offset, + int len, u32 * val) +{ + struct pci_controller *hose = bus->sysdata; + unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8) + | (((bus->number - hose->first_busno) & 0xff) << 16) + | (hose->index << 24); + int ret = -1; + int rval; + + rval = rtas_call(rtas_token("read-pci-config"), 2, 2, &ret, addr, len); + *val = ret; + return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; +} + +static int rtas_write_config(struct pci_bus *bus, unsigned int devfn, + int offset, int len, u32 val) +{ + struct pci_controller *hose = bus->sysdata; + unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8) + | (((bus->number - hose->first_busno) & 0xff) << 16) + | (hose->index << 24); + int rval; + + rval = rtas_call(rtas_token("write-pci-config"), 3, 1, NULL, + addr, len, val); + return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; +} + +static struct pci_ops rtas_pci_ops = { + rtas_read_config, + rtas_write_config +}; + +void __init efika_pcisetup(void) +{ + const int *bus_range; + int len; + struct pci_controller *hose; + struct device_node *root; + struct device_node *pcictrl; + + root = of_find_node_by_path("/"); + if (root == NULL) { + printk(KERN_WARNING EFIKA_PLATFORM_NAME + ": Unable to find the root node\n"); + return; + } + + for (pcictrl = NULL;;) { + pcictrl = of_get_next_child(root, pcictrl); + if ((pcictrl == NULL) || (strcmp(pcictrl->name, "pci") == 0)) + break; + } + + of_node_put(root); + + if (pcictrl == NULL) { + printk(KERN_WARNING EFIKA_PLATFORM_NAME + ": Unable to find the PCI bridge node\n"); + return; + } + + bus_range = get_property(pcictrl, "bus-range", &len); + if (bus_range == NULL || len < 2 * sizeof(int)) { + printk(KERN_WARNING EFIKA_PLATFORM_NAME + ": Can't get bus-range for %s\n", pcictrl->full_name); + return; + } + + if (bus_range[1] == bus_range[0]) + printk(KERN_INFO EFIKA_PLATFORM_NAME ": PCI bus %d", + bus_range[0]); + else + printk(KERN_INFO EFIKA_PLATFORM_NAME ": PCI buses %d..%d", + bus_range[0], bus_range[1]); + printk(" controlled by %s\n", pcictrl->full_name); + printk("\n"); + + hose = pcibios_alloc_controller(); + if (!hose) { + printk(KERN_WARNING EFIKA_PLATFORM_NAME + ": Can't allocate PCI controller structure for %s\n", + pcictrl->full_name); + return; + } + + hose->arch_data = of_node_get(pcictrl); + hose->first_busno = bus_range[0]; + hose->last_busno = bus_range[1]; + hose->ops = &rtas_pci_ops; + + pci_process_bridge_OF_ranges(hose, pcictrl, 0); +} + +#else +void __init efika_pcisetup(void) +{} +#endif diff --git a/arch/powerpc/platforms/efika/setup.c b/arch/powerpc/platforms/efika/setup.c new file mode 100644 index 0000000..3bc1b5f --- /dev/null +++ b/arch/powerpc/platforms/efika/setup.c @@ -0,0 +1,149 @@ +/* + * + * Efika 5K2 platform setup + * Some code really inspired from the lite5200b platform. + * + * Copyright (C) 2006 bplan GmbH + * + * 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/errno.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/reboot.h> +#include <linux/init.h> +#include <linux/utsrelease.h> +#include <linux/seq_file.h> +#include <linux/root_dev.h> +#include <linux/initrd.h> +#include <linux/timer.h> +#include <linux/pci.h> + +#include <asm/pgtable.h> +#include <asm/prom.h> +#include <asm/time.h> +#include <asm/machdep.h> +#include <asm/rtas.h> +#include <asm/of_device.h> +#include <asm/mpc52xx.h> + +#include "efika.h" + +static void efika_show_cpuinfo(struct seq_file *m) +{ + struct device_node *root; + const char *revision = NULL; + const char *codegendescription = NULL; + const char *codegenvendor = NULL; + + root = of_find_node_by_path("/"); + if (root) { + revision = get_property(root, "revision", NULL); + codegendescription = + get_property(root, "CODEGEN,description", NULL); + codegenvendor = get_property(root, "CODEGEN,vendor", NULL); + + of_node_put(root); + } + + if (codegendescription) + seq_printf(m, "machine\t\t: %s\n", codegendescription); + else + seq_printf(m, "machine\t\t: Efika\n"); + + if (revision) + seq_printf(m, "revision\t: %s\n", revision); + + if (codegenvendor) + seq_printf(m, "vendor\t\t: %s\n", codegenvendor); + + of_node_put(root); +} + +static void __init efika_setup_arch(void) +{ + rtas_initialize(); + +#ifdef CONFIG_BLK_DEV_INITRD + initrd_below_start_ok = 1; + + if (initrd_start) + ROOT_DEV = Root_RAM0; + else +#endif + ROOT_DEV = Root_SDA2; /* sda2 (sda1 is for the kernel) */ + + efika_pcisetup(); + + if (ppc_md.progress) + ppc_md.progress("Linux/PPC " UTS_RELEASE " runnung on Efika ;-)\n", 0x0); +} + +static void __init efika_init(void) +{ + struct device_node *np; + struct device_node *cnp = NULL; + const u32 *base; + + /* Find every child of the SOC node and add it to of_platform */ + np = of_find_node_by_name(NULL, "builtin"); + if (np) { + char name[BUS_ID_SIZE]; + while ((cnp = of_get_next_child(np, cnp))) { + strcpy(name, cnp->name); + + base = get_property(cnp, "reg", NULL); + if (base == NULL) + continue; + + snprintf(name+strlen(name), BUS_ID_SIZE, "@%x", *base); + of_platform_device_create(cnp, name, NULL); + + printk(KERN_INFO EFIKA_PLATFORM_NAME" : Added %s (type '%s' at '%s') to the known devices\n", name, cnp->type, cnp->full_name); + } + } + + if (ppc_md.progress) + ppc_md.progress(" Have fun with your Efika! ", 0x7777); +} + +static int __init efika_probe(void) +{ + char *model = of_get_flat_dt_prop(of_get_flat_dt_root(), + "model", NULL); + + if (model == NULL) + return 0; + if (strcmp(model, "EFIKA5K2")) + return 0; + + ISA_DMA_THRESHOLD = ~0L; + DMA_MODE_READ = 0x44; + DMA_MODE_WRITE = 0x48; + + return 1; +} + +define_machine(efika) +{ + .name = EFIKA_PLATFORM_NAME, + .probe = efika_probe, + .setup_arch = efika_setup_arch, + .init = efika_init, + .show_cpuinfo = efika_show_cpuinfo, + .init_IRQ = mpc52xx_init_irq, + .get_irq = mpc52xx_get_irq, + .restart = rtas_restart, + .power_off = rtas_power_off, + .halt = rtas_halt, + .set_rtc_time = rtas_set_rtc_time, + .get_rtc_time = rtas_get_rtc_time, + .progress = rtas_progress, + .get_boot_time = rtas_get_boot_time, + .calibrate_decr = generic_calibrate_decr, + .phys_mem_access_prot = pci_phys_mem_access_prot, +}; |