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| author | Tobias Wolf <dev-NTEO@vplace.de> | 2018-08-19 13:04:02 +0200 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2018-09-10 10:07:42 +0200 |
| commit | 93bfafb8dc209f153022796d9e747149e66cc29e (patch) | |
| tree | f4d72e20ee692071a31ed97b0ee2745062e00fb0 /target/linux/ramips/patches-4.14 | |
| parent | 78a5d25dca5de9b00890e7a414a6e423c4ba6e19 (diff) | |
| download | upstream-93bfafb8dc209f153022796d9e747149e66cc29e.tar.gz upstream-93bfafb8dc209f153022796d9e747149e66cc29e.tar.bz2 upstream-93bfafb8dc209f153022796d9e747149e66cc29e.zip | |
ramips: Fix early memory calculation for certain MIPS platforms
Kernel upstream commit 67a3ba25aa95 ("MIPS: Fix incorrect mem=X@Y handling") introduced a new issue for rt288x where "PHYS_OFFSET" is 0x0 but the calculated "ramstart" is not. As the prerequisite of custom memory map has been removed, this results in the full memory range of 0x0 - 0x8000000 to be marked as reserved
for this platform.
This patch adds the originally intended prerequisite again.
Signed-off-by: Tobias Wolf <dev-NTEO@vplace.de>
Diffstat (limited to 'target/linux/ramips/patches-4.14')
| -rw-r--r-- | target/linux/ramips/patches-4.14/0003-MIPS-Fix-memory-reservation-in-bootmem_init-for-cert.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-4.14/0003-MIPS-Fix-memory-reservation-in-bootmem_init-for-cert.patch b/target/linux/ramips/patches-4.14/0003-MIPS-Fix-memory-reservation-in-bootmem_init-for-cert.patch new file mode 100644 index 0000000000..d47f27e194 --- /dev/null +++ b/target/linux/ramips/patches-4.14/0003-MIPS-Fix-memory-reservation-in-bootmem_init-for-cert.patch @@ -0,0 +1,45 @@ +From: Tobias Wolf <dev-NTEO@vplace.de> +Subject: [v2] MIPS: Fix memory reservation in bootmem_init for certain non-usermem setups + +Commit 67a3ba25aa95 ("MIPS: Fix incorrect mem=X@Y handling") introduced a new +issue for rt288x where "PHYS_OFFSET" is 0x0 but the calculated "ramstart" is +not. As the prerequisite of custom memory map has been removed, this results +in the full memory range of 0x0 - 0x8000000 to be marked as reserved for this +platform. + +v2: Correctly compare that usermem is not null. + +This patch adds the originally intended prerequisite again. + +Signed-off-by: Tobias Wolf <dev-NTEO@vplace.de> +--- + +--- a/arch/mips/kernel/setup.c 2018-08-18 19:07:07.142066706 +0200 ++++ b/arch/mips/kernel/setup.c 2018-08-18 19:10:17.827918423 +0200 +@@ -369,6 +369,8 @@ static unsigned long __init bootmap_byte + return ALIGN(bytes, sizeof(long)); + } + ++static int usermem __initdata; ++ + static void __init bootmem_init(void) + { + unsigned long reserved_end; +@@ -442,7 +444,7 @@ static void __init bootmem_init(void) + /* + * Reserve any memory between the start of RAM and PHYS_OFFSET + */ +- if (ramstart > PHYS_OFFSET) ++ if (usermem && ramstart > PHYS_OFFSET) + add_memory_region(PHYS_OFFSET, ramstart - PHYS_OFFSET, + BOOT_MEM_RESERVED); + +@@ -652,8 +654,6 @@ static void __init bootmem_init(void) + * initialization hook for anything else was introduced. + */ + +-static int usermem __initdata; +- + static int __init early_parse_mem(char *p) + { + phys_addr_t start, size; |