diff options
Diffstat (limited to 'arch/powerpc/sysdev/fsl_soc.c')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_soc.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c index 90ad16161604..21af6d5c075a 100644 --- a/arch/powerpc/sysdev/fsl_soc.c +++ b/arch/powerpc/sysdev/fsl_soc.c @@ -42,6 +42,37 @@ extern void init_fcc_ioports(struct fs_platform_info*); extern void init_fec_ioports(struct fs_platform_info*); extern void init_smc_ioports(struct fs_uart_platform_info*); static phys_addr_t immrbase = -1; +static phys_addr_t dcsrbase = -1; + +phys_addr_t get_dcsrbase(void) +{ + struct device_node *np; + const __be32 *prop; + int size; + u32 naddr; + + if (dcsrbase != -1) + return dcsrbase; + + np = of_find_compatible_node(NULL, NULL, "fsl,dcsr"); + if (!np) + return -1; + + prop = of_get_property(np, "#address-cells", &size); + if (prop && size == 4) + naddr = be32_to_cpup(prop); + else + naddr = 2; + + prop = of_get_property(np, "ranges", NULL); + if (prop) + dcsrbase = of_translate_address(np, prop + naddr); + + of_node_put(np); + + return dcsrbase; +} +EXPORT_SYMBOL(get_dcsrbase); phys_addr_t get_immrbase(void) { |