From: Paul Burton <paul.burton@imgtec.com>
Date: Mon, 26 Sep 2016 18:28:56 +0000 (+0100)
Subject: MIPS: Use ram_top, not bi_memsize, in arch_lmb_reserve
X-Git-Tag: v2017.01-rc1~154^2~1
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=7a3e0f74a7c3ff83ba0607ebf8a14310ff08db60;p=u-boot

MIPS: Use ram_top, not bi_memsize, in arch_lmb_reserve

When calculating the region to reserve for the stack in
arch_lmb_reserve, make use of ram_top instead of adding bi_memsize to
CONFIG_SYS_SDRAM_BASE. This avoids overflow if the system has enough
memory to reach the end of the address space.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
---

diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c
index 0c6a4ab3b3..9fec4ad438 100644
--- a/arch/mips/lib/bootm.c
+++ b/arch/mips/lib/bootm.c
@@ -42,7 +42,7 @@ void arch_lmb_reserve(struct lmb *lmb)
 
 	/* adjust sp by 4K to be safe */
 	sp -= 4096;
-	lmb_reserve(lmb, sp, CONFIG_SYS_SDRAM_BASE + gd->ram_size - sp);
+	lmb_reserve(lmb, sp, gd->ram_top - sp);
 }
 
 static void linux_cmdline_init(void)