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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?= <[email protected]>
- X-Patchwork-Id: 632273
- Message-Id: <[email protected]>
- To: [email protected]
- 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 <[email protected]>
- --- a/arch/mips/cavium-octeon/setup.c
- +++ b/arch/mips/cavium-octeon/setup.c
- @@ -1018,6 +1018,10 @@ 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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