OpenWrt – Blame information for rev 4
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| Rev | Author | Line No. | Line |
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| 4 | office | 1 | From patchwork Wed Jun 8 13:49:26 2016 |
| 2 | Content-Type: text/plain; charset="utf-8" |
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| 3 | MIME-Version: 1.0 |
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| 4 | Content-Transfer-Encoding: 8bit |
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| 5 | Subject: [LEDE-DEV] cavium: Ignore MEM boot param when too small |
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| 6 | From: =?utf-8?q?Micha=C5=82_Osowiecki?= <michal.osowiecki@gmail.com> |
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| 7 | X-Patchwork-Id: 632273 |
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| 8 | Message-Id: <57582266.8020105@gmail.com> |
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| 9 | To: lede-dev@lists.infradead.org |
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| 10 | Date: Wed, 8 Jun 2016 15:49:26 +0200 |
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| 11 | |||
| 12 | Cisco RV0XX u-boot sets MEM=2048 as boot param. We assume that at least |
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| 13 | 4MB (mem_alloc_size) of ram is needed to run linux on cavium boards, so |
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| 14 | if mem < 4M - ignore it and set default value |
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| 15 | |||
| 16 | |||
| 17 | Signed-off-by: Michał Osowiecki <michal.osowiecki@gmail.com> |
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| 18 | |||
| 19 | --- a/arch/mips/cavium-octeon/setup.c |
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| 20 | +++ b/arch/mips/cavium-octeon/setup.c |
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| 21 | @@ -1018,6 +1018,10 @@ void __init plat_mem_setup(void) |
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| 22 | if (mem_alloc_size > max_memory) |
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| 23 | mem_alloc_size = max_memory; |
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| 24 | |||
| 25 | + /* Ignore bootarg MEM <= 4MB - cisco uses a b0rked uboot env on their products */ |
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| 26 | + if (max_memory <= mem_alloc_size) |
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| 27 | + max_memory = 512ull << 20; |
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| 28 | + |
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| 29 | /* Crashkernel ignores bootmem list. It relies on mem=X@Y option */ |
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| 30 | #ifdef CONFIG_CRASH_DUMP |
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| 31 | add_memory_region(reserve_low_mem, max_memory, BOOT_MEM_RAM); |