From fc39c2fd51e64707de4d61ed49479ebea2847e1b Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Tue, 31 Mar 2009 17:58:13 -0500 Subject: 85xx/86xx: Ensure MP boot page is not used We had a bug on 86xx in which the boot page used to bring up secondary cores was being overwritten and used for the malloc region in u-boot. We need to reserve the region of memory that the boot page is going to be put at so nothing uses it. Signed-off-by: Kumar Gala Acked-by: Becky Bruce --- lib_ppc/board.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/lib_ppc/board.c b/lib_ppc/board.c index 3b93e4e158..a33ee27f26 100644 --- a/lib_ppc/board.c +++ b/lib_ppc/board.c @@ -79,6 +79,10 @@ #include #endif +#ifdef CONFIG_MP +#include +#endif + #ifdef CONFIG_SYS_UPDATE_FLASH_SIZE extern int update_flash_size (int flash_size); #endif @@ -444,6 +448,17 @@ void board_init_f (ulong bootflag) addr = CONFIG_SYS_SDRAM_BASE + get_effective_memsize(); +#if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500)) + /* + * We need to make sure the location we intend to put secondary core + * boot code is reserved and not used by any part of u-boot + */ + if (addr > determine_mp_bootpg()) { + addr = determine_mp_bootpg(); + debug ("Reserving MP boot page to %08lx\n", addr); + } +#endif + #ifdef CONFIG_LOGBUFFER #ifndef CONFIG_ALT_LB_ADDR /* reserve kernel log buffer */ -- cgit