From 96eb1413e80fdd91c81e0fbb13f0c88200dd6d16 Mon Sep 17 00:00:00 2001 From: Mark Kettenis Date: Sat, 12 Mar 2022 15:09:19 +0100 Subject: [PATCH] arm: apple: Fix mem layout The current approach for setting the environment variables that describe the memory layout runs the risk of overlapping with reserved memory regions. Use the lmb code to derive the addresses for these variables instead. Signed-off-by: Mark Kettenis --- arch/arm/mach-apple/board.c | 32 ++++++++++++++------------------ 1 file changed, 14 insertions(+), 18 deletions(-) diff --git a/arch/arm/mach-apple/board.c b/arch/arm/mach-apple/board.c index 585b2ed7c2..1f6b0c147d 100644 --- a/arch/arm/mach-apple/board.c +++ b/arch/arm/mach-apple/board.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include @@ -267,32 +268,27 @@ u64 get_page_table_size(void) return SZ_256K; } +#define KERNEL_COMP_SIZE SZ_128M + int board_late_init(void) { - unsigned long base; - unsigned long top; + struct lmb lmb; u32 status = 0; - /* Reserve 4M each for scriptaddr and pxefile_addr_r at the top of RAM - * at least 1M below the stack. - */ - top = gd->start_addr_sp - CONFIG_STACK_SIZE - SZ_8M - SZ_1M; - top = ALIGN_DOWN(top, SZ_8M); - - status |= env_set_hex("scriptaddr", top + SZ_4M); - status |= env_set_hex("pxefile_addr_r", top); + lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob); /* somewhat based on the Linux Kernel boot requirements: * align by 2M and maximal FDT size 2M */ - base = ALIGN(gd->ram_base, SZ_2M); - - status |= env_set_hex("fdt_addr_r", base); - status |= env_set_hex("kernel_addr_r", base + SZ_2M); - status |= env_set_hex("ramdisk_addr_r", base + SZ_128M); - status |= env_set_hex("loadaddr", base + SZ_2G); - status |= env_set_hex("kernel_comp_addr_r", base + SZ_2G - SZ_128M); - status |= env_set_hex("kernel_comp_size", SZ_128M); + status |= env_set_hex("loadaddr", lmb_alloc(&lmb, SZ_1G, SZ_2M)); + status |= env_set_hex("fdt_addr_r", lmb_alloc(&lmb, SZ_2M, SZ_2M)); + status |= env_set_hex("kernel_addr_r", lmb_alloc(&lmb, SZ_128M, SZ_2M)); + status |= env_set_hex("ramdisk_addr_r", lmb_alloc(&lmb, SZ_1G, SZ_2M)); + status |= env_set_hex("kernel_comp_addr_r", + lmb_alloc(&lmb, KERNEL_COMP_SIZE, SZ_2M)); + status |= env_set_hex("kernel_comp_size", KERNEL_COMP_SIZE); + status |= env_set_hex("scriptaddr", lmb_alloc(&lmb, SZ_4M, SZ_2M)); + status |= env_set_hex("pxefile_addr_r", lmb_alloc(&lmb, SZ_4M, SZ_2M)); if (status) log_warning("late_init: Failed to set run time variables\n");