[PATCH] Add Efika platform support
authorNicolas DET <nd@bplan-gmbh.de>
Sun, 5 Nov 2006 11:57:16 +0000 (12:57 +0100)
committerPaul Mackerras <paulus@samba.org>
Mon, 13 Nov 2006 03:45:04 +0000 (14:45 +1100)
Add Efika (http://www.bplan-gmbh.de/efika_spec_en.html) platform
support for arch/powerpc.

Signed-off-by: Nicolas DET <nd@bplan-gmbh.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/Kconfig
arch/powerpc/platforms/Makefile
arch/powerpc/platforms/efika/Makefile [new file with mode: 0644]
arch/powerpc/platforms/efika/efika.h [new file with mode: 0644]
arch/powerpc/platforms/efika/pci.c [new file with mode: 0644]
arch/powerpc/platforms/efika/setup.c [new file with mode: 0644]

index 7107d472413f5c49e12948702844ab1f87ed6297..a41d191bf1be7e2b8dc30b77228158e22846f9a1 100644 (file)
@@ -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
index e58fa953a50bfc465e3bbc8d79bba22b14174293..7ad2673d0aa51b22292a3deed45fac5d72ed8319 100644 (file)
@@ -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 (file)
index 0000000..17b2a78
--- /dev/null
@@ -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 (file)
index 0000000..2f060fd
--- /dev/null
@@ -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 (file)
index 0000000..62e05b2
--- /dev/null
@@ -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 (file)
index 0000000..3bc1b5f
--- /dev/null
@@ -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,
+};