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authorDirk Eibach <dirk.eibach@gdsys.cc>2014-11-03 10:56:31 +0100
committerStefan Roese <sr@denx.de>2014-11-05 10:23:50 +0100
commitf73002bc015aa8518a88a98d2e305e8c2868bf50 (patch)
tree464cf64613556d47c7b73356f894820fc6ff05b0 /arch/powerpc/cpu
parent26f195c71252e98aebfffd5cfa994a4475559370 (diff)
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ppc: Fix ppc4xx CONFIG_SYS_GENERIC_BOARD
I realized that with v2014.10 u-boot is not starting up on ppc4xx boards with CONFIG_SYS_GENERIC_BOARD set. I bisected it down to this: d54d7eb support blackfin board initialization in generic board_f With d29437a ppc: Make ppc4xx ready for CONFIG_SYS_GENERIC_BOARD I set gd to a defined value for ppc4xx in cpu_init_f(). I did not realize that the gd struct has also to be memset() to zero at this point. But at least commit d54d7eb assumes it is: @@ -516,11 +528,13 @@ static int reserve_malloc(void) /* (permanently) allocate a Board Info struct */ static int reserve_board(void) { - gd->start_addr_sp -= sizeof(bd_t); - gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t)); - memset(gd->bd, '\0', sizeof(bd_t)); - debug("Reserving %zu Bytes for Board Info at: %08lx\n", - sizeof(bd_t), gd->start_addr_sp); + if (!gd->bd) { + gd->start_addr_sp -= sizeof(bd_t); + gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t)); + memset(gd->bd, '\0', sizeof(bd_t)); + debug("Reserving %zu Bytes for Board Info at: %08lx\n", + sizeof(bd_t), gd->start_addr_sp); + } return 0; } #endif This might also be an issue on other architectures, so maintainers should check. Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc> Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'arch/powerpc/cpu')
-rw-r--r--arch/powerpc/cpu/ppc4xx/cpu_init.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/ppc4xx/cpu_init.c b/arch/powerpc/cpu/ppc4xx/cpu_init.c
index 2256123..e5a0e21 100644
--- a/arch/powerpc/cpu/ppc4xx/cpu_init.c
+++ b/arch/powerpc/cpu/ppc4xx/cpu_init.c
@@ -451,6 +451,9 @@ cpu_init_f (void)
#endif /* CONFIG_440SP/SPE || CONFIG_460EX/GT || CONFIG_405EX */
gd = (gd_t *)(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
+
+ /* Clear initial global data */
+ memset((void *)gd, 0, sizeof(gd_t));
}
/*