diff options
Diffstat (limited to 'arch/powerpc/boot/4xx.c')
| -rw-r--r-- | arch/powerpc/boot/4xx.c | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/arch/powerpc/boot/4xx.c b/arch/powerpc/boot/4xx.c index 9f64e840bef6..59026e4585dc 100644 --- a/arch/powerpc/boot/4xx.c +++ b/arch/powerpc/boot/4xx.c @@ -21,8 +21,8 @@ #include "reg.h" #include "dcr.h" -/* Read the 44x memory controller to get size of system memory. */ -void ibm44x_fixup_memsize(void) +/* Read the 4xx SDRAM controller to get size of system memory. */ +void ibm4xx_fixup_memsize(void) { int i; unsigned long memsize, bank_config; @@ -39,8 +39,9 @@ void ibm44x_fixup_memsize(void) dt_fixup_memory(0, memsize); } -#define SPRN_DBCR0 0x134 -#define DBCR0_RST_SYSTEM 0x30000000 +#define SPRN_DBCR0_40X 0x3F2 +#define SPRN_DBCR0_44X 0x134 +#define DBCR0_RST_SYSTEM 0x30000000 void ibm44x_dbcr_reset(void) { @@ -50,11 +51,35 @@ void ibm44x_dbcr_reset(void) "mfspr %0,%1\n" "oris %0,%0,%2@h\n" "mtspr %1,%0" - : "=&r"(tmp) : "i"(SPRN_DBCR0), "i"(DBCR0_RST_SYSTEM) + : "=&r"(tmp) : "i"(SPRN_DBCR0_44X), "i"(DBCR0_RST_SYSTEM) ); } +void ibm40x_dbcr_reset(void) +{ + unsigned long tmp; + + asm volatile ( + "mfspr %0,%1\n" + "oris %0,%0,%2@h\n" + "mtspr %1,%0" + : "=&r"(tmp) : "i"(SPRN_DBCR0_40X), "i"(DBCR0_RST_SYSTEM) + ); +} + +#define EMAC_RESET 0x20000000 +void ibm4xx_quiesce_eth(u32 *emac0, u32 *emac1) +{ + /* Quiesce the MAL and EMAC(s) since PIBS/OpenBIOS don't do this for us */ + if (emac0) + *emac0 = EMAC_RESET; + if (emac1) + *emac1 = EMAC_RESET; + + mtdcr(DCRN_MAL0_CFG, MAL_RESET); +} + /* Read 4xx EBC bus bridge registers to get mappings of the peripheral * banks into the OPB address space */ void ibm4xx_fixup_ebc_ranges(const char *ebc) |