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[PATCH] ppc64: add BPA platform type 

This adds the basic support for running on BPA machines.
So far, this is only the IBM workstation, and it will
not run on others without a little more generalization.

It should be possible to configure a kernel for any
combination of CONFIG_PPC_BPA with any of the other
multiplatform targets.

Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Arnd Bergmann 2005-06-23 09:43:37 +10:00 committed by Paul Mackerras
parent 031f7edecf
commit fef1c772fa
15 changed files with 216 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
MAINTAINERS
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@ -504,6 +504,13 @@ L: bonding-devel@lists.sourceforge.net
W: http://sourceforge.net/projects/bonding/
S: Supported
BROADBAND PROCESSOR ARCHITECTURE
P: Arnd Bergmann
M: arnd@arndb.de
L: linuxppc64-dev@ozlabs.org
W: http://linuxppc64.org
S: Supported
BTTV VIDEO4LINUX DRIVER
P: Gerd Knorr
M: kraxel@bytesex.org

6
arch/ppc64/Kconfig
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@ -77,6 +77,10 @@ config PPC_PSERIES
bool " IBM pSeries & new iSeries"
default y
config PPC_BPA
bool " Broadband Processor Architecture"
depends on PPC_MULTIPLATFORM
config PPC_PMAC
depends on PPC_MULTIPLATFORM
bool " Apple G5 based machines"
@ -256,7 +260,7 @@ config MSCHUNKS
config PPC_RTAS
bool
depends on PPC_PSERIES
depends on PPC_PSERIES || PPC_BPA
default y
config RTAS_PROC

2
arch/ppc64/Makefile
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@ -90,12 +90,14 @@ boot := arch/ppc64/boot
boottarget-$(CONFIG_PPC_PSERIES) := zImage zImage.initrd
boottarget-$(CONFIG_PPC_MAPLE) := zImage zImage.initrd
boottarget-$(CONFIG_PPC_ISERIES) := vmlinux.sminitrd vmlinux.initrd vmlinux.sm
boottarget-$(CONFIG_PPC_BPA) := zImage zImage.initrd
$(boottarget-y): vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
bootimage-$(CONFIG_PPC_PSERIES) := $(boot)/zImage
bootimage-$(CONFIG_PPC_PMAC) := vmlinux
bootimage-$(CONFIG_PPC_MAPLE) := $(boot)/zImage
bootimage-$(CONFIG_PPC_BPA) := zImage
bootimage-$(CONFIG_PPC_ISERIES) := vmlinux
BOOTIMAGE := $(bootimage-y)
install: vmlinux

3
arch/ppc64/kernel/Makefile
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@ -33,6 +33,8 @@ obj-$(CONFIG_PPC_PSERIES) += pSeries_pci.o pSeries_lpar.o pSeries_hvCall.o \
pSeries_nvram.o rtasd.o ras.o pSeries_reconfig.o \
xics.o pSeries_setup.o pSeries_iommu.o
obj-$(CONFIG_PPC_BPA) += bpa_setup.o bpa_nvram.o
obj-$(CONFIG_EEH) += eeh.o
obj-$(CONFIG_PROC_FS) += proc_ppc64.o
obj-$(CONFIG_RTAS_FLASH) += rtas_flash.o
@ -59,6 +61,7 @@ ifdef CONFIG_SMP
obj-$(CONFIG_PPC_PMAC) += pmac_smp.o smp-tbsync.o
obj-$(CONFIG_PPC_ISERIES) += iSeries_smp.o
obj-$(CONFIG_PPC_PSERIES) += pSeries_smp.o
obj-$(CONFIG_PPC_BPA) += pSeries_smp.o
obj-$(CONFIG_PPC_MAPLE) += smp-tbsync.o
endif

135
arch/ppc64/kernel/bpa_setup.c Normal file
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@ -0,0 +1,135 @@
/*
* linux/arch/ppc/kernel/bpa_setup.c
*
* Copyright (C) 1995 Linus Torvalds
* Adapted from 'alpha' version by Gary Thomas
* Modified by Cort Dougan (cort@cs.nmt.edu)
* Modified by PPC64 Team, IBM Corp
* Modified by BPA Team, IBM Deutschland Entwicklung GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#undef DEBUG
#include <linux/config.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/slab.h>
#include <linux/user.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/console.h>
#include <asm/mmu.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/prom.h>
#include <asm/rtas.h>
#include <asm/pci-bridge.h>
#include <asm/iommu.h>
#include <asm/dma.h>
#include <asm/machdep.h>
#include <asm/time.h>
#include <asm/nvram.h>
#include <asm/cputable.h>
#include "pci.h"
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif
void bpa_get_cpuinfo(struct seq_file *m)
{
struct device_node *root;
const char *model = "";
root = of_find_node_by_path("/");
if (root)
model = get_property(root, "model", NULL);
seq_printf(m, "machine\t\t: BPA %s\n", model);
of_node_put(root);
}
static void bpa_progress(char *s, unsigned short hex)
{
printk("*** %04x : %s\n", hex, s ? s : "");
}
static void __init bpa_setup_arch(void)
{
#ifdef CONFIG_SMP
smp_init_pSeries();
#endif
/* init to some ~sane value until calibrate_delay() runs */
loops_per_jiffy = 50000000;
if (ROOT_DEV == 0) {
printk("No ramdisk, default root is /dev/hda2\n");
ROOT_DEV = Root_HDA2;
}
/* Find and initialize PCI host bridges */
init_pci_config_tokens();
find_and_init_phbs();
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
bpa_nvram_init();
}
/*
* Early initialization. Relocation is on but do not reference unbolted pages
*/
static void __init bpa_init_early(void)
{
DBG(" -> bpa_init_early()\n");
hpte_init_native();
pci_direct_iommu_init();
ppc64_interrupt_controller = IC_BPA_IIC;
DBG(" <- bpa_init_early()\n");
}
static int __init bpa_probe(int platform)
{
if (platform != PLATFORM_BPA)
return 0;
return 1;
}
struct machdep_calls __initdata bpa_md = {
.probe = bpa_probe,
.setup_arch = bpa_setup_arch,
.init_early = bpa_init_early,
.get_cpuinfo = bpa_get_cpuinfo,
.restart = rtas_restart,
.power_off = rtas_power_off,
.halt = rtas_halt,
.get_boot_time = rtas_get_boot_time,
.get_rtc_time = rtas_get_rtc_time,
.set_rtc_time = rtas_set_rtc_time,
.calibrate_decr = generic_calibrate_decr,
.progress = bpa_progress,
};

16
arch/ppc64/kernel/cpu_setup_power4.S
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@ -73,7 +73,21 @@ _GLOBAL(__970_cpu_preinit)
_GLOBAL(__setup_cpu_power4)
blr
_GLOBAL(__setup_cpu_be)
/* Set large page sizes LP=0: 16MB, LP=1: 64KB */
addi r3, 0, 0
ori r3, r3, HID6_LB
sldi r3, r3, 32
nor r3, r3, r3
mfspr r4, SPRN_HID6
and r4, r4, r3
addi r3, 0, 0x02000
sldi r3, r3, 32
or r4, r4, r3
mtspr SPRN_HID6, r4
blr
_GLOBAL(__setup_cpu_ppc970)
mfspr r0,SPRN_HID0
li r11,5 /* clear DOZE and SLEEP */

11
arch/ppc64/kernel/cputable.c
View File

@ -34,6 +34,7 @@ EXPORT_SYMBOL(cur_cpu_spec);
extern void __setup_cpu_power3(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_power4(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_ppc970(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_be(unsigned long offset, struct cpu_spec* spec);
/* We only set the altivec features if the kernel was compiled with altivec
@ -162,6 +163,16 @@ struct cpu_spec cpu_specs[] = {
__setup_cpu_power4,
COMMON_PPC64_FW
},
{ /* BE DD1.x */
0xffff0000, 0x00700000, "Broadband Engine",
CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE |
CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_ALTIVEC_COMP |
CPU_FTR_SMT,
COMMON_USER_PPC64 | PPC_FEATURE_HAS_ALTIVEC_COMP,
128, 128,
__setup_cpu_be,
COMMON_PPC64_FW
},
{ /* default match */
0x00000000, 0x00000000, "POWER4 (compatible)",
CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE |

3
arch/ppc64/kernel/irq.c
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@ -395,6 +395,9 @@ int virt_irq_create_mapping(unsigned int real_irq)
if (ppc64_interrupt_controller == IC_OPEN_PIC)
return real_irq; /* no mapping for openpic (for now) */
if (ppc64_interrupt_controller == IC_BPA_IIC)
return real_irq; /* no mapping for iic either */
/* don't map interrupts < MIN_VIRT_IRQ */
if (real_irq < MIN_VIRT_IRQ) {
virt_irq_to_real_map[real_irq] = real_irq;

2
arch/ppc64/kernel/proc_ppc64.c
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@ -53,7 +53,7 @@ static int __init proc_ppc64_create(void)
if (!root)
return 1;
if (!(systemcfg->platform & PLATFORM_PSERIES))
if (!(systemcfg->platform & (PLATFORM_PSERIES | PLATFORM_BPA)))
return 0;
if (!proc_mkdir("rtas", root))

4
arch/ppc64/kernel/prom_init.c
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@ -1915,9 +1915,9 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, unsigned long
prom_send_capabilities();
/*
* On pSeries, copy the CPU hold code
* On pSeries and BPA, copy the CPU hold code
*/
if (RELOC(of_platform) & PLATFORM_PSERIES)
if (RELOC(of_platform) & (PLATFORM_PSERIES | PLATFORM_BPA))
copy_and_flush(0, KERNELBASE - offset, 0x100, 0);
/*

4
arch/ppc64/kernel/setup.c
View File

@ -344,6 +344,7 @@ static void __init setup_cpu_maps(void)
extern struct machdep_calls pSeries_md;
extern struct machdep_calls pmac_md;
extern struct machdep_calls maple_md;
extern struct machdep_calls bpa_md;
/* Ultimately, stuff them in an elf section like initcalls... */
static struct machdep_calls __initdata *machines[] = {
@ -356,6 +357,9 @@ static struct machdep_calls __initdata *machines[] = {
#ifdef CONFIG_PPC_MAPLE
&maple_md,
#endif /* CONFIG_PPC_MAPLE */
#ifdef CONFIG_PPC_BPA
&bpa_md,
#endif
NULL
};

4
arch/ppc64/kernel/traps.c
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@ -126,6 +126,10 @@ int die(const char *str, struct pt_regs *regs, long err)
printk("POWERMAC ");
nl = 1;
break;
case PLATFORM_BPA:
printk("BPA ");
nl = 1;
break;
}
if (nl)
printk("\n");

5
include/asm-ppc64/mmu.h
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@ -47,9 +47,10 @@
#define SLB_VSID_KS ASM_CONST(0x0000000000000800)
#define SLB_VSID_KP ASM_CONST(0x0000000000000400)
#define SLB_VSID_N ASM_CONST(0x0000000000000200) /* no-execute */
#define SLB_VSID_L ASM_CONST(0x0000000000000100) /* largepage 16M */
#define SLB_VSID_L ASM_CONST(0x0000000000000100) /* largepage */
#define SLB_VSID_C ASM_CONST(0x0000000000000080) /* class */
#define SLB_VSID_LS ASM_CONST(0x0000000000000070) /* size of largepage */
#define SLB_VSID_KERNEL (SLB_VSID_KP|SLB_VSID_C)
#define SLB_VSID_USER (SLB_VSID_KP|SLB_VSID_KS)

15
include/asm-ppc64/processor.h
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@ -138,8 +138,16 @@
#define SPRN_NIADORM 0x3F3 /* Hardware Implementation Register 2 */
#define SPRN_HID4 0x3F4 /* 970 HID4 */
#define SPRN_HID5 0x3F6 /* 970 HID5 */
#define SPRN_TSC 0x3FD /* Thread switch control */
#define SPRN_TST 0x3FC /* Thread switch timeout */
#define SPRN_HID6 0x3F9 /* BE HID 6 */
#define HID6_LB (0x0F<<12) /* Concurrent Large Page Modes */
#define HID6_DLP (1<<20) /* Disable all large page modes (4K only) */
#define SPRN_TSCR 0x399 /* Thread switch control on BE */
#define SPRN_TTR 0x39A /* Thread switch timeout on BE */
#define TSCR_DEC_ENABLE 0x200000 /* Decrementer Interrupt */
#define TSCR_EE_ENABLE 0x100000 /* External Interrupt */
#define TSCR_EE_BOOST 0x080000 /* External Interrupt Boost */
#define SPRN_TSC 0x3FD /* Thread switch control on others */
#define SPRN_TST 0x3FC /* Thread switch timeout on others */
#define SPRN_L2CR 0x3F9 /* Level 2 Cache Control Regsiter */
#define SPRN_LR 0x008 /* Link Register */
#define SPRN_PIR 0x3FF /* Processor Identification Register */
@ -259,6 +267,7 @@
#define PV_970FX 0x003C
#define PV_630 0x0040
#define PV_630p 0x0041
#define PV_BE 0x0070
/* Platforms supported by PPC64 */
#define PLATFORM_PSERIES 0x0100
@ -267,6 +276,7 @@
#define PLATFORM_LPAR 0x0001
#define PLATFORM_POWERMAC 0x0400
#define PLATFORM_MAPLE 0x0500
#define PLATFORM_BPA 0x1000
/* Compatibility with drivers coming from PPC32 world */
#define _machine (systemcfg->platform)
@ -278,6 +288,7 @@
#define IC_INVALID 0
#define IC_OPEN_PIC 1
#define IC_PPC_XIC 2
#define IC_BPA_IIC 3
#define XGLUE(a,b) a##b
#define GLUE(a,b) XGLUE(a,b)

8
include/asm-ppc64/smp.h
View File

@ -85,6 +85,14 @@ extern void smp_generic_take_timebase(void);
extern struct smp_ops_t *smp_ops;
#ifdef CONFIG_PPC_PSERIES
void vpa_init(int cpu);
#else
static inline void vpa_init(int cpu)
{
}
#endif /* CONFIG_PPC_PSERIES */
#endif /* __ASSEMBLY__ */
#endif /* !(_PPC64_SMP_H) */