diff options
Diffstat (limited to 'arch/powerpc/platforms/85xx')
| -rw-r--r-- | arch/powerpc/platforms/85xx/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/85xx/mpc85xx_ds.c | 11 | ||||
| -rw-r--r-- | arch/powerpc/platforms/85xx/mpc85xx_mds.c | 8 | ||||
| -rw-r--r-- | arch/powerpc/platforms/85xx/smp.c | 104 |
4 files changed, 121 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile index cb3054e1001..f0798c09980 100644 --- a/arch/powerpc/platforms/85xx/Makefile +++ b/arch/powerpc/platforms/85xx/Makefile @@ -1,6 +1,8 @@ # # Makefile for the PowerPC 85xx linux kernel. # +obj-$(CONFIG_SMP) += smp.o + obj-$(CONFIG_MPC8540_ADS) += mpc85xx_ads.o obj-$(CONFIG_MPC8560_ADS) += mpc85xx_ads.o obj-$(CONFIG_MPC85xx_CDS) += mpc85xx_cds.o diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ds.c b/arch/powerpc/platforms/85xx/mpc85xx_ds.c index 613bf8c2e30..a8301c8ad53 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_ds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_ds.c @@ -63,6 +63,7 @@ void __init mpc85xx_ds_pic_init(void) struct device_node *cascade_node = NULL; int cascade_irq; #endif + unsigned long root = of_get_flat_dt_root(); np = of_find_node_by_type(NULL, "open-pic"); if (np == NULL) { @@ -76,11 +77,19 @@ void __init mpc85xx_ds_pic_init(void) return; } - mpic = mpic_alloc(np, r.start, + if (of_flat_dt_is_compatible(root, "fsl,MPC8572DS-CAMP")) { + mpic = mpic_alloc(np, r.start, + MPIC_PRIMARY | + MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS, + 0, 256, " OpenPIC "); + } else { + mpic = mpic_alloc(np, r.start, MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU, 0, 256, " OpenPIC "); + } + BUG_ON(mpic == NULL); of_node_put(np); diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c index 2494c515591..658a36fab3a 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c @@ -231,7 +231,7 @@ static void __init mpc85xx_mds_setup_arch(void) static int __init board_fixups(void) { - char phy_id[BUS_ID_SIZE]; + char phy_id[20]; char *compstrs[2] = {"fsl,gianfar-mdio", "fsl,ucc-mdio"}; struct device_node *mdio; struct resource res; @@ -241,13 +241,15 @@ static int __init board_fixups(void) mdio = of_find_compatible_node(NULL, NULL, compstrs[i]); of_address_to_resource(mdio, 0, &res); - snprintf(phy_id, BUS_ID_SIZE, "%x:%02x", res.start, 1); + snprintf(phy_id, sizeof(phy_id), "%llx:%02x", + (unsigned long long)res.start, 1); phy_register_fixup_for_id(phy_id, mpc8568_fixup_125_clock); phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups); /* Register a workaround for errata */ - snprintf(phy_id, BUS_ID_SIZE, "%x:%02x", res.start, 7); + snprintf(phy_id, sizeof(phy_id), "%llx:%02x", + (unsigned long long)res.start, 7); phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups); of_node_put(mdio); diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c new file mode 100644 index 00000000000..d652c713f49 --- /dev/null +++ b/arch/powerpc/platforms/85xx/smp.c @@ -0,0 +1,104 @@ +/* + * Author: Andy Fleming <afleming@freescale.com> + * Kumar Gala <galak@kernel.crashing.org> + * + * Copyright 2006-2008 Freescale Semiconductor Inc. + * + * 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. + */ + +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/of.h> + +#include <asm/machdep.h> +#include <asm/pgtable.h> +#include <asm/page.h> +#include <asm/mpic.h> +#include <asm/cacheflush.h> + +#include <sysdev/fsl_soc.h> + +extern volatile unsigned long __secondary_hold_acknowledge; +extern void __early_start(void); + +#define BOOT_ENTRY_ADDR_UPPER 0 +#define BOOT_ENTRY_ADDR_LOWER 1 +#define BOOT_ENTRY_R3_UPPER 2 +#define BOOT_ENTRY_R3_LOWER 3 +#define BOOT_ENTRY_RESV 4 +#define BOOT_ENTRY_PIR 5 +#define BOOT_ENTRY_R6_UPPER 6 +#define BOOT_ENTRY_R6_LOWER 7 +#define NUM_BOOT_ENTRY 8 +#define SIZE_BOOT_ENTRY (NUM_BOOT_ENTRY * sizeof(u32)) + +static void __init +smp_85xx_kick_cpu(int nr) +{ + unsigned long flags; + const u64 *cpu_rel_addr; + __iomem u32 *bptr_vaddr; + struct device_node *np; + int n = 0; + + WARN_ON (nr < 0 || nr >= NR_CPUS); + + pr_debug("smp_85xx_kick_cpu: kick CPU #%d\n", nr); + + local_irq_save(flags); + + np = of_get_cpu_node(nr, NULL); + cpu_rel_addr = of_get_property(np, "cpu-release-addr", NULL); + + if (cpu_rel_addr == NULL) { + printk(KERN_ERR "No cpu-release-addr for cpu %d\n", nr); + return; + } + + /* Map the spin table */ + bptr_vaddr = ioremap(*cpu_rel_addr, SIZE_BOOT_ENTRY); + + out_be32(bptr_vaddr + BOOT_ENTRY_PIR, nr); + out_be32(bptr_vaddr + BOOT_ENTRY_ADDR_LOWER, __pa(__early_start)); + + /* Wait a bit for the CPU to ack. */ + while ((__secondary_hold_acknowledge != nr) && (++n < 1000)) + mdelay(1); + + iounmap(bptr_vaddr); + + local_irq_restore(flags); + + pr_debug("waited %d msecs for CPU #%d.\n", n, nr); +} + +static void __init +smp_85xx_setup_cpu(int cpu_nr) +{ + mpic_setup_this_cpu(); + + /* Clear any pending timer interrupts */ + mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS); + + /* Enable decrementer interrupt */ + mtspr(SPRN_TCR, TCR_DIE); +} + +struct smp_ops_t smp_85xx_ops = { + .message_pass = smp_mpic_message_pass, + .probe = smp_mpic_probe, + .kick_cpu = smp_85xx_kick_cpu, + .setup_cpu = smp_85xx_setup_cpu, +}; + +void __init +mpc85xx_smp_init(void) +{ + smp_ops = &smp_85xx_ops; +} |