openwrtv3/target/linux/octeon/patches-4.9/170-cisco-hack.patch
Felix Fietkau 611731a690 octeon: port missing 4.9 patches
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2017-05-04 00:40:15 +02:00

31 lines
1.1 KiB
Diff

From patchwork Wed Jun 8 13:49:26 2016
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Subject: [LEDE-DEV] cavium: Ignore MEM boot param when too small
From: =?utf-8?q?Micha=C5=82_Osowiecki?= <michal.osowiecki@gmail.com>
X-Patchwork-Id: 632273
Message-Id: <57582266.8020105@gmail.com>
To: lede-dev@lists.infradead.org
Date: Wed, 8 Jun 2016 15:49:26 +0200
Cisco RV0XX u-boot sets MEM=2048 as boot param. We assume that at least
4MB (mem_alloc_size) of ram is needed to run linux on cavium boards, so
if mem < 4M - ignore it and set default value
Signed-off-by: Michał Osowiecki <michal.osowiecki@gmail.com>
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -1005,6 +1005,10 @@ void __init plat_mem_setup(void)
if (mem_alloc_size > max_memory)
mem_alloc_size = max_memory;
+ /* Ignore bootarg MEM <= 4MB - cisco uses a b0rked uboot env on their products */
+ if (max_memory <= mem_alloc_size)
+ max_memory = 512ull << 20;
+
/* Crashkernel ignores bootmem list. It relies on mem=X@Y option */
#ifdef CONFIG_CRASH_DUMP
add_memory_region(reserve_low_mem, max_memory, BOOT_MEM_RAM);