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- From patchwork Wed Jun 8 13:49:26 2016
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- 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: MichaÅ Osowiecki <michal.osowiecki@gmail.com>
- --- a/arch/mips/cavium-octeon/setup.c
- +++ b/arch/mips/cavium-octeon/setup.c
- @@ -944,6 +944,10 @@ 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);
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