diff options
Diffstat (limited to 'arch/sparc/cpu/leon3/cpu_init.c')
| -rw-r--r-- | arch/sparc/cpu/leon3/cpu_init.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/sparc/cpu/leon3/cpu_init.c b/arch/sparc/cpu/leon3/cpu_init.c index a0526cd..421859e 100644 --- a/arch/sparc/cpu/leon3/cpu_init.c +++ b/arch/sparc/cpu/leon3/cpu_init.c @@ -30,7 +30,6 @@ DECLARE_GLOBAL_DATA_PTR; ambapp_dev_irqmp *irqmp = NULL; ambapp_dev_gptimer *gptimer = NULL; unsigned int gptimer_irq = 0; -int leon3_snooping_avail = 0; /* * Breath some life into the CPU... @@ -63,12 +62,24 @@ void cpu_init_f2(void) ambapp_bus_init(CONFIG_AMBAPP_IOAREA, CONFIG_SYS_CLK_FREQ, &ambapp_plb); } +/* If cache snooping is available in hardware the result will be set + * to 0x800000, otherwise 0. + */ +static unsigned int snoop_detect(void) +{ + unsigned int result; + asm("lda [%%g0] 2, %0" : "=r"(result)); + return result & 0x00800000; +} + int arch_cpu_init(void) { gd->cpu_clk = CONFIG_SYS_CLK_FREQ; gd->bus_clk = CONFIG_SYS_CLK_FREQ; gd->ram_size = CONFIG_SYS_SDRAM_SIZE; + gd->arch.snooping_available = snoop_detect(); + return 0; } |