[PATCH] Add Efika platform support (c37858d3) · Commits · e / devices / android_kernel_teracube_emerald

arch/powerpc/Kconfig

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		@@ -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

arch/powerpc/platforms/Makefile

+1 −0

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		@@ -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/

arch/powerpc/platforms/efika/Makefile

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		obj-y += setup.o mpc52xx.o pci.o

arch/powerpc/platforms/efika/efika.h

0 → 100644

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		/*
		* 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

arch/powerpc/platforms/efika/pci.c

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+119 −0

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		#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