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[PATCH] Add Efika platform support 

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>
hifive-unleashed-5.1
Nicolas DET 2006-11-05 12:57:16 +01:00 committed by Paul Mackerras
parent 0f6c95dcab
commit c37858d333
6 changed files with 297 additions and 0 deletions
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8
arch/powerpc/Kconfig
View 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

1
arch/powerpc/platforms/Makefile
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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/

1
arch/powerpc/platforms/efika/Makefile 100644
View File

@ -0,0 +1 @@
obj-y += setup.o mpc52xx.o pci.o

19
arch/powerpc/platforms/efika/efika.h 100644
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@ -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

119
arch/powerpc/platforms/efika/pci.c 100644
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@ -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

149
arch/powerpc/platforms/efika/setup.c 100644
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@ -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,
};