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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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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
Paul Mackerras
parent
031f7edecf
commit
fef1c772fa
@ -504,6 +504,13 @@ L: bonding-devel@lists.sourceforge.net
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W: http://sourceforge.net/projects/bonding/
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S: Supported
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BROADBAND PROCESSOR ARCHITECTURE
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P: Arnd Bergmann
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M: arnd@arndb.de
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L: linuxppc64-dev@ozlabs.org
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W: http://linuxppc64.org
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S: Supported
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BTTV VIDEO4LINUX DRIVER
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P: Gerd Knorr
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M: kraxel@bytesex.org
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@ -77,6 +77,10 @@ config PPC_PSERIES
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bool " IBM pSeries & new iSeries"
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default y
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config PPC_BPA
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bool " Broadband Processor Architecture"
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depends on PPC_MULTIPLATFORM
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config PPC_PMAC
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depends on PPC_MULTIPLATFORM
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bool " Apple G5 based machines"
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@ -256,7 +260,7 @@ config MSCHUNKS
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config PPC_RTAS
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bool
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depends on PPC_PSERIES
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depends on PPC_PSERIES || PPC_BPA
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default y
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config RTAS_PROC
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@ -90,12 +90,14 @@ boot := arch/ppc64/boot
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boottarget-$(CONFIG_PPC_PSERIES) := zImage zImage.initrd
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boottarget-$(CONFIG_PPC_MAPLE) := zImage zImage.initrd
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boottarget-$(CONFIG_PPC_ISERIES) := vmlinux.sminitrd vmlinux.initrd vmlinux.sm
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boottarget-$(CONFIG_PPC_BPA) := zImage zImage.initrd
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$(boottarget-y): vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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bootimage-$(CONFIG_PPC_PSERIES) := $(boot)/zImage
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bootimage-$(CONFIG_PPC_PMAC) := vmlinux
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bootimage-$(CONFIG_PPC_MAPLE) := $(boot)/zImage
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bootimage-$(CONFIG_PPC_BPA) := zImage
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bootimage-$(CONFIG_PPC_ISERIES) := vmlinux
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BOOTIMAGE := $(bootimage-y)
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install: vmlinux
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@ -33,6 +33,8 @@ obj-$(CONFIG_PPC_PSERIES) += pSeries_pci.o pSeries_lpar.o pSeries_hvCall.o \
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pSeries_nvram.o rtasd.o ras.o pSeries_reconfig.o \
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xics.o pSeries_setup.o pSeries_iommu.o
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obj-$(CONFIG_PPC_BPA) += bpa_setup.o bpa_nvram.o
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obj-$(CONFIG_EEH) += eeh.o
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obj-$(CONFIG_PROC_FS) += proc_ppc64.o
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obj-$(CONFIG_RTAS_FLASH) += rtas_flash.o
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@ -59,6 +61,7 @@ ifdef CONFIG_SMP
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obj-$(CONFIG_PPC_PMAC) += pmac_smp.o smp-tbsync.o
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obj-$(CONFIG_PPC_ISERIES) += iSeries_smp.o
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obj-$(CONFIG_PPC_PSERIES) += pSeries_smp.o
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obj-$(CONFIG_PPC_BPA) += pSeries_smp.o
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obj-$(CONFIG_PPC_MAPLE) += smp-tbsync.o
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endif
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135
arch/ppc64/kernel/bpa_setup.c
Normal file
135
arch/ppc64/kernel/bpa_setup.c
Normal file
@ -0,0 +1,135 @@
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/*
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* linux/arch/ppc/kernel/bpa_setup.c
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*
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* Copyright (C) 1995 Linus Torvalds
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* Adapted from 'alpha' version by Gary Thomas
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* Modified by Cort Dougan (cort@cs.nmt.edu)
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* Modified by PPC64 Team, IBM Corp
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* Modified by BPA Team, IBM Deutschland Entwicklung GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#undef DEBUG
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#include <linux/config.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/stddef.h>
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#include <linux/unistd.h>
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#include <linux/slab.h>
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#include <linux/user.h>
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#include <linux/reboot.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/irq.h>
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#include <linux/seq_file.h>
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#include <linux/root_dev.h>
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#include <linux/console.h>
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#include <asm/mmu.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#include <asm/pgtable.h>
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#include <asm/prom.h>
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#include <asm/rtas.h>
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#include <asm/pci-bridge.h>
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#include <asm/iommu.h>
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#include <asm/dma.h>
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#include <asm/machdep.h>
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#include <asm/time.h>
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#include <asm/nvram.h>
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#include <asm/cputable.h>
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#include "pci.h"
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#ifdef DEBUG
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#define DBG(fmt...) udbg_printf(fmt)
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#else
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#define DBG(fmt...)
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#endif
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void bpa_get_cpuinfo(struct seq_file *m)
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{
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struct device_node *root;
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const char *model = "";
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root = of_find_node_by_path("/");
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if (root)
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model = get_property(root, "model", NULL);
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seq_printf(m, "machine\t\t: BPA %s\n", model);
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of_node_put(root);
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}
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static void bpa_progress(char *s, unsigned short hex)
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{
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printk("*** %04x : %s\n", hex, s ? s : "");
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}
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static void __init bpa_setup_arch(void)
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{
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#ifdef CONFIG_SMP
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smp_init_pSeries();
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#endif
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/* init to some ~sane value until calibrate_delay() runs */
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loops_per_jiffy = 50000000;
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if (ROOT_DEV == 0) {
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printk("No ramdisk, default root is /dev/hda2\n");
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ROOT_DEV = Root_HDA2;
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}
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/* Find and initialize PCI host bridges */
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init_pci_config_tokens();
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find_and_init_phbs();
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#ifdef CONFIG_DUMMY_CONSOLE
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conswitchp = &dummy_con;
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#endif
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bpa_nvram_init();
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}
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/*
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* Early initialization. Relocation is on but do not reference unbolted pages
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*/
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static void __init bpa_init_early(void)
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{
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DBG(" -> bpa_init_early()\n");
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hpte_init_native();
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pci_direct_iommu_init();
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ppc64_interrupt_controller = IC_BPA_IIC;
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DBG(" <- bpa_init_early()\n");
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}
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static int __init bpa_probe(int platform)
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{
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if (platform != PLATFORM_BPA)
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return 0;
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return 1;
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}
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struct machdep_calls __initdata bpa_md = {
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.probe = bpa_probe,
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.setup_arch = bpa_setup_arch,
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.init_early = bpa_init_early,
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.get_cpuinfo = bpa_get_cpuinfo,
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.restart = rtas_restart,
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.power_off = rtas_power_off,
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.halt = rtas_halt,
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.get_boot_time = rtas_get_boot_time,
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.get_rtc_time = rtas_get_rtc_time,
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.set_rtc_time = rtas_set_rtc_time,
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.calibrate_decr = generic_calibrate_decr,
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.progress = bpa_progress,
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};
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@ -73,7 +73,21 @@ _GLOBAL(__970_cpu_preinit)
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_GLOBAL(__setup_cpu_power4)
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blr
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_GLOBAL(__setup_cpu_be)
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/* Set large page sizes LP=0: 16MB, LP=1: 64KB */
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addi r3, 0, 0
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ori r3, r3, HID6_LB
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sldi r3, r3, 32
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nor r3, r3, r3
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mfspr r4, SPRN_HID6
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and r4, r4, r3
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addi r3, 0, 0x02000
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sldi r3, r3, 32
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or r4, r4, r3
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mtspr SPRN_HID6, r4
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blr
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_GLOBAL(__setup_cpu_ppc970)
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mfspr r0,SPRN_HID0
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li r11,5 /* clear DOZE and SLEEP */
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@ -34,6 +34,7 @@ EXPORT_SYMBOL(cur_cpu_spec);
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extern void __setup_cpu_power3(unsigned long offset, struct cpu_spec* spec);
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extern void __setup_cpu_power4(unsigned long offset, struct cpu_spec* spec);
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extern void __setup_cpu_ppc970(unsigned long offset, struct cpu_spec* spec);
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extern void __setup_cpu_be(unsigned long offset, struct cpu_spec* spec);
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/* We only set the altivec features if the kernel was compiled with altivec
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@ -162,6 +163,16 @@ struct cpu_spec cpu_specs[] = {
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__setup_cpu_power4,
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COMMON_PPC64_FW
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},
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{ /* BE DD1.x */
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0xffff0000, 0x00700000, "Broadband Engine",
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CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE |
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CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_ALTIVEC_COMP |
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CPU_FTR_SMT,
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COMMON_USER_PPC64 | PPC_FEATURE_HAS_ALTIVEC_COMP,
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128, 128,
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__setup_cpu_be,
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COMMON_PPC64_FW
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},
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{ /* default match */
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0x00000000, 0x00000000, "POWER4 (compatible)",
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CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE |
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@ -395,6 +395,9 @@ int virt_irq_create_mapping(unsigned int real_irq)
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if (ppc64_interrupt_controller == IC_OPEN_PIC)
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return real_irq; /* no mapping for openpic (for now) */
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if (ppc64_interrupt_controller == IC_BPA_IIC)
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return real_irq; /* no mapping for iic either */
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/* don't map interrupts < MIN_VIRT_IRQ */
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if (real_irq < MIN_VIRT_IRQ) {
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virt_irq_to_real_map[real_irq] = real_irq;
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@ -53,7 +53,7 @@ static int __init proc_ppc64_create(void)
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if (!root)
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return 1;
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if (!(systemcfg->platform & PLATFORM_PSERIES))
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if (!(systemcfg->platform & (PLATFORM_PSERIES | PLATFORM_BPA)))
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return 0;
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if (!proc_mkdir("rtas", root))
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@ -1915,9 +1915,9 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, unsigned long
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prom_send_capabilities();
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/*
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* On pSeries, copy the CPU hold code
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* On pSeries and BPA, copy the CPU hold code
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*/
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if (RELOC(of_platform) & PLATFORM_PSERIES)
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if (RELOC(of_platform) & (PLATFORM_PSERIES | PLATFORM_BPA))
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copy_and_flush(0, KERNELBASE - offset, 0x100, 0);
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/*
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@ -344,6 +344,7 @@ static void __init setup_cpu_maps(void)
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extern struct machdep_calls pSeries_md;
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extern struct machdep_calls pmac_md;
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extern struct machdep_calls maple_md;
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extern struct machdep_calls bpa_md;
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/* Ultimately, stuff them in an elf section like initcalls... */
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static struct machdep_calls __initdata *machines[] = {
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@ -356,6 +357,9 @@ static struct machdep_calls __initdata *machines[] = {
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#ifdef CONFIG_PPC_MAPLE
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&maple_md,
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#endif /* CONFIG_PPC_MAPLE */
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#ifdef CONFIG_PPC_BPA
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&bpa_md,
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#endif
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NULL
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};
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@ -126,6 +126,10 @@ int die(const char *str, struct pt_regs *regs, long err)
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printk("POWERMAC ");
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nl = 1;
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break;
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case PLATFORM_BPA:
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printk("BPA ");
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nl = 1;
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break;
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}
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if (nl)
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printk("\n");
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@ -47,9 +47,10 @@
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#define SLB_VSID_KS ASM_CONST(0x0000000000000800)
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#define SLB_VSID_KP ASM_CONST(0x0000000000000400)
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#define SLB_VSID_N ASM_CONST(0x0000000000000200) /* no-execute */
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#define SLB_VSID_L ASM_CONST(0x0000000000000100) /* largepage 16M */
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#define SLB_VSID_L ASM_CONST(0x0000000000000100) /* largepage */
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#define SLB_VSID_C ASM_CONST(0x0000000000000080) /* class */
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#define SLB_VSID_LS ASM_CONST(0x0000000000000070) /* size of largepage */
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#define SLB_VSID_KERNEL (SLB_VSID_KP|SLB_VSID_C)
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#define SLB_VSID_USER (SLB_VSID_KP|SLB_VSID_KS)
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@ -138,8 +138,16 @@
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#define SPRN_NIADORM 0x3F3 /* Hardware Implementation Register 2 */
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#define SPRN_HID4 0x3F4 /* 970 HID4 */
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#define SPRN_HID5 0x3F6 /* 970 HID5 */
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#define SPRN_TSC 0x3FD /* Thread switch control */
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#define SPRN_TST 0x3FC /* Thread switch timeout */
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#define SPRN_HID6 0x3F9 /* BE HID 6 */
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#define HID6_LB (0x0F<<12) /* Concurrent Large Page Modes */
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#define HID6_DLP (1<<20) /* Disable all large page modes (4K only) */
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#define SPRN_TSCR 0x399 /* Thread switch control on BE */
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#define SPRN_TTR 0x39A /* Thread switch timeout on BE */
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#define TSCR_DEC_ENABLE 0x200000 /* Decrementer Interrupt */
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#define TSCR_EE_ENABLE 0x100000 /* External Interrupt */
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#define TSCR_EE_BOOST 0x080000 /* External Interrupt Boost */
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#define SPRN_TSC 0x3FD /* Thread switch control on others */
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#define SPRN_TST 0x3FC /* Thread switch timeout on others */
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#define SPRN_L2CR 0x3F9 /* Level 2 Cache Control Regsiter */
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#define SPRN_LR 0x008 /* Link Register */
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#define SPRN_PIR 0x3FF /* Processor Identification Register */
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@ -259,6 +267,7 @@
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#define PV_970FX 0x003C
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#define PV_630 0x0040
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#define PV_630p 0x0041
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#define PV_BE 0x0070
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/* Platforms supported by PPC64 */
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#define PLATFORM_PSERIES 0x0100
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@ -267,6 +276,7 @@
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#define PLATFORM_LPAR 0x0001
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#define PLATFORM_POWERMAC 0x0400
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#define PLATFORM_MAPLE 0x0500
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#define PLATFORM_BPA 0x1000
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/* Compatibility with drivers coming from PPC32 world */
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#define _machine (systemcfg->platform)
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@ -278,6 +288,7 @@
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#define IC_INVALID 0
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#define IC_OPEN_PIC 1
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#define IC_PPC_XIC 2
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#define IC_BPA_IIC 3
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#define XGLUE(a,b) a##b
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#define GLUE(a,b) XGLUE(a,b)
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@ -85,6 +85,14 @@ extern void smp_generic_take_timebase(void);
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extern struct smp_ops_t *smp_ops;
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#ifdef CONFIG_PPC_PSERIES
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void vpa_init(int cpu);
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#else
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static inline void vpa_init(int cpu)
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{
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}
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#endif /* CONFIG_PPC_PSERIES */
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#endif /* __ASSEMBLY__ */
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#endif /* !(_PPC64_SMP_H) */
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