Provide a board_lmb_reserve helper function to ensure we reserve the page of memory we are using for the boot page translation code.
Signed-off-by: Kumar Gala galak@kernel.crashing.org --- cpu/mpc85xx/mp.c | 14 ++++++++++++++ cpu/mpc85xx/mp.h | 1 + 2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/cpu/mpc85xx/mp.c b/cpu/mpc85xx/mp.c index d3727b0..7b10fba 100644 --- a/cpu/mpc85xx/mp.c +++ b/cpu/mpc85xx/mp.c @@ -23,6 +23,7 @@ #include <common.h> #include <asm/processor.h> #include <ioports.h> +#include <lmb.h> #include <asm/io.h> #include "mp.h"
@@ -177,6 +178,19 @@ static void pq3_mp_up(unsigned long bootpg) out_be32(&gur->devdisr, devdisr); }
+void cpu_mp_lmb_reserve(struct lmb *lmb) +{ + u32 bootpg; + + /* if we have 4G or more of memory, put the boot page at 4Gb-4k */ + if ((u64)gd->ram_size > 0xfffff000) + bootpg = 0xfffff000; + else + bootpg = gd->ram_size - 4096; + + lmb_reserve(lmb, bootpg, 4096); +} + void setup_mp(void) { extern ulong __secondary_start_page; diff --git a/cpu/mpc85xx/mp.h b/cpu/mpc85xx/mp.h index b762ee2..4329286 100644 --- a/cpu/mpc85xx/mp.h +++ b/cpu/mpc85xx/mp.h @@ -4,6 +4,7 @@ ulong get_spin_addr(void); void setup_mp(void); u32 get_my_id(void); +void cpu_mp_lmb_reserve(struct lmb *lmb);
#define BOOT_ENTRY_ADDR_UPPER 0 #define BOOT_ENTRY_ADDR_LOWER 1