diff options
Diffstat (limited to 'arch/powerpc/sysdev/ppc4xx_soc.c')
| -rw-r--r-- | arch/powerpc/sysdev/ppc4xx_soc.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/arch/powerpc/sysdev/ppc4xx_soc.c b/arch/powerpc/sysdev/ppc4xx_soc.c index 5b32adc9a9b..5c77c9ba33a 100644 --- a/arch/powerpc/sysdev/ppc4xx_soc.c +++ b/arch/powerpc/sysdev/ppc4xx_soc.c @@ -19,6 +19,7 @@ #include <linux/errno.h> #include <linux/interrupt.h> #include <linux/irq.h> +#include <linux/of_irq.h> #include <linux/of_platform.h> #include <asm/dcr.h> @@ -115,7 +116,7 @@ static int __init ppc4xx_l2c_probe(void) } /* Install error handler */ - if (request_irq(irq, l2c_error_handler, IRQF_DISABLED, "L2C", 0) < 0) { + if (request_irq(irq, l2c_error_handler, 0, "L2C", 0) < 0) { printk(KERN_ERR "Cannot install L2C error handler" ", cache is not enabled\n"); of_node_put(np); @@ -174,7 +175,8 @@ static int __init ppc4xx_l2c_probe(void) | L2C_CFG_CPIM | L2C_CFG_TPIM | L2C_CFG_LIM | L2C_CFG_SMCM; /* Check for 460EX/GT special handling */ - if (of_device_is_compatible(np, "ibm,l2-cache-460ex")) + if (of_device_is_compatible(np, "ibm,l2-cache-460ex") || + of_device_is_compatible(np, "ibm,l2-cache-460gt")) r |= L2C_CFG_RDBW; mtdcr(dcrbase_l2c + DCRN_L2C0_CFG, r); @@ -190,11 +192,31 @@ static int __init ppc4xx_l2c_probe(void) arch_initcall(ppc4xx_l2c_probe); /* - * At present, this routine just applies a system reset. + * Apply a system reset. Alternatively a board specific value may be + * provided via the "reset-type" property in the cpu node. */ void ppc4xx_reset_system(char *cmd) { - mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_RST_SYSTEM); + struct device_node *np; + u32 reset_type = DBCR0_RST_SYSTEM; + const u32 *prop; + + np = of_find_node_by_type(NULL, "cpu"); + if (np) { + prop = of_get_property(np, "reset-type", NULL); + + /* + * Check if property exists and if it is in range: + * 1 - PPC4xx core reset + * 2 - PPC4xx chip reset + * 3 - PPC4xx system reset (default) + */ + if ((prop) && ((prop[0] >= 1) && (prop[0] <= 3))) + reset_type = prop[0] << 28; + } + + mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | reset_type); + while (1) ; /* Just in case the reset doesn't work */ } |