diff options
Diffstat (limited to 'arch/powerpc/kernel/prom_init.c')
| -rw-r--r-- | arch/powerpc/kernel/prom_init.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 520ef42f642..4fb5938ce6d 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -2117,11 +2117,92 @@ static void __init fixup_device_tree_pmac(void) #define fixup_device_tree_pmac() #endif +#ifdef CONFIG_PPC_EFIKA +/* The current fw of the Efika has a device tree needs quite a few + * fixups to be compliant with the mpc52xx bindings. It's currently + * unknown if it will ever be compliant (come on bPlan ...) so we do fixups. + * NOTE that we (barely) tolerate it because the EFIKA was out before + * the bindings were finished, for any new boards -> RTFM ! */ + +struct subst_entry { + char *path; + char *property; + void *value; + int value_len; +}; + +static void __init fixup_device_tree_efika(void) +{ + /* Substitution table */ + #define prop_cstr(x) x, sizeof(x) + int prop_sound_irq[3] = { 2, 2, 0 }; + int prop_bcomm_irq[3*16] = { 3,0,0, 3,1,0, 3,2,0, 3,3,0, + 3,4,0, 3,5,0, 3,6,0, 3,7,0, + 3,8,0, 3,9,0, 3,10,0, 3,11,0, + 3,12,0, 3,13,0, 3,14,0, 3,15,0 }; + struct subst_entry efika_subst_table[] = { + { "/", "device_type", prop_cstr("efika") }, + { "/builtin", "compatible", prop_cstr("soc") }, + { "/builtin/ata", "compatible", prop_cstr("mpc5200b-ata\0mpc5200-ata"), }, + { "/builtin/bestcomm", "compatible", prop_cstr("mpc5200b-bestcomm\0mpc5200-bestcomm") }, + { "/builtin/bestcomm", "interrupts", prop_bcomm_irq, sizeof(prop_bcomm_irq) }, + { "/builtin/ethernet", "compatible", prop_cstr("mpc5200b-fec\0mpc5200-fec") }, + { "/builtin/pic", "compatible", prop_cstr("mpc5200b-pic\0mpc5200-pic") }, + { "/builtin/serial", "compatible", prop_cstr("mpc5200b-psc-uart\0mpc5200-psc-uart") }, + { "/builtin/sound", "compatible", prop_cstr("mpc5200b-psc-ac97\0mpc5200-psc-ac97") }, + { "/builtin/sound", "interrupts", prop_sound_irq, sizeof(prop_sound_irq) }, + { "/builtin/sram", "compatible", prop_cstr("mpc5200b-sram\0mpc5200-sram") }, + { "/builtin/sram", "device_type", prop_cstr("sram") }, + {} + }; + #undef prop_cstr + + /* Vars */ + u32 node; + char prop[64]; + int rv, i; + + /* Check if we're really running on a EFIKA */ + node = call_prom("finddevice", 1, 1, ADDR("/")); + if (!PHANDLE_VALID(node)) + return; + + rv = prom_getprop(node, "model", prop, sizeof(prop)); + if (rv == PROM_ERROR) + return; + if (strcmp(prop, "EFIKA5K2")) + return; + + prom_printf("Applying EFIKA device tree fixups\n"); + + /* Process substitution table */ + for (i=0; efika_subst_table[i].path; i++) { + struct subst_entry *se = &efika_subst_table[i]; + + node = call_prom("finddevice", 1, 1, ADDR(se->path)); + if (!PHANDLE_VALID(node)) { + prom_printf("fixup_device_tree_efika: ", + "skipped entry %x - not found\n", i); + continue; + } + + rv = prom_setprop(node, se->path, se->property, + se->value, se->value_len ); + if (rv == PROM_ERROR) + prom_printf("fixup_device_tree_efika: ", + "skipped entry %x - setprop error\n", i); + } +} +#else +#define fixup_device_tree_efika() +#endif + static void __init fixup_device_tree(void) { fixup_device_tree_maple(); fixup_device_tree_chrp(); fixup_device_tree_pmac(); + fixup_device_tree_efika(); } static void __init prom_find_boot_cpu(void) |