From 7992633e63b9317ce78d8b9decddc418a55e4cbc Mon Sep 17 00:00:00 2001 From: John Crispin Date: Tue, 14 Jun 2016 13:29:30 +0200 Subject: [PATCH] octeon: Ignore MEM boot param when too small MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 --- .../octeon/patches-4.4/170-cisco-hack.patch | 31 +++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 target/linux/octeon/patches-4.4/170-cisco-hack.patch diff --git a/target/linux/octeon/patches-4.4/170-cisco-hack.patch b/target/linux/octeon/patches-4.4/170-cisco-hack.patch new file mode 100644 index 0000000000..6e49100e6a --- /dev/null +++ b/target/linux/octeon/patches-4.4/170-cisco-hack.patch @@ -0,0 +1,31 @@ +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?= +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 + +--- a/arch/mips/cavium-octeon/setup.c ++++ b/arch/mips/cavium-octeon/setup.c +@@ -944,6 +944,10 @@ + 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); -- 2.25.1