From: daixj <fl.serv...@t-firefly.com>
Signed-off-by: daixj <fl.serv...@t-firefly.com>
---
...support-automatic-recognition-memory-size.patch | 50 ++++++++++++++++++++
1 file changed, 50 insertions(+)
create mode 100644
target/linux/ramips/patches-3.18/0113-add-mt7621-support-automatic-recognition-memory-size.patch
diff --git
a/target/linux/ramips/patches-3.18/0113-add-mt7621-support-automatic-recognition-memory-size.patch
b/target/linux/ramips/patches-3.18/0113-add-mt7621-support-automatic-recognition-memory-size.patch
new file mode 100644
index 0000000..f3906b8
--- /dev/null
+++
b/target/linux/ramips/patches-3.18/0113-add-mt7621-support-automatic-recognition-memory-size.patch
@@ -0,0 +1,50 @@
+Index: linux-3.18.11/arch/mips/include/asm/mach-ralink/mt7621.h
+===================================================================
+--- linux-3.18.11.orig/arch/mips/include/asm/mach-ralink/mt7621.h
2015-05-06 17:46:36.606144740 +0800
++++ linux-3.18.11/arch/mips/include/asm/mach-ralink/mt7621.h 2015-05-06
17:50:16.362151259 +0800
+@@ -29,7 +29,7 @@
+
+ #define MT7621_DRAM_BASE 0x0
+ #define MT7621_DDR2_SIZE_MIN 32
+-#define MT7621_DDR2_SIZE_MAX 256
++#define MT7621_DDR2_SIZE_MAX 512
+
+ #define MT7621_CHIP_NAME0 0x3637544D
+ #define MT7621_CHIP_NAME1 0x20203132
+Index: linux-3.18.11/arch/mips/kernel/setup.c
+===================================================================
+--- linux-3.18.11.orig/arch/mips/kernel/setup.c 2015-04-04
10:46:37.000000000 +0800
++++ linux-3.18.11/arch/mips/kernel/setup.c 2015-05-07 09:30:27.138152614
+0800
+@@ -131,8 +131,12 @@
+ {
+ void *dm = &detect_magic;
+ phys_t size;
+-
+- for (size = sz_min; size < sz_max; size <<= 1) {
++#if defined(CONFIG_SOC_MT7621)
++ phys_t low_mem_size = 0x1c000000;
++ phys_t high_mem_start = 0x20000000;
++ phys_t high_mem_size = 0;
++#endif
++ for (size = sz_min; size < sz_max; size <<= 1) {
+ if (!memcmp(dm, dm + size, sizeof(detect_magic)))
+ break;
+ }
+@@ -142,8 +146,15 @@
+ (unsigned long long) start,
+ ((unsigned long long) sz_min) / SZ_1M,
+ ((unsigned long long) sz_max) / SZ_1M);
+-
+- add_memory_region(start, size, BOOT_MEM_RAM);
++#if defined(CONFIG_SOC_MT7621)
++ low_mem_size = (size > low_mem_size)?low_mem_size:size;
++ high_mem_size = size - low_mem_size;
++ add_memory_region(start,low_mem_size, BOOT_MEM_RAM);
++ if(high_mem_size > 0)
++ add_memory_region(high_mem_start,high_mem_size, BOOT_MEM_RAM);
++#else
++ add_memory_region(start, size, BOOT_MEM_RAM);
++#endif
+ }
+
+ static void __init print_memory_map(void)
--
1.7.9.5
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