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authorHauke Mehrtens <hauke@hauke-m.de>2009-11-29 16:53:50 +0000
committerHauke Mehrtens <hauke@hauke-m.de>2009-11-29 16:53:50 +0000
commit6fe93904b09c8c3a9fea5a72c21b1c1ddf6b16bf (patch)
tree81bf7ca514262ceaf58db4e9499da95561120f81 /target/linux/amazon/files/arch
parentfa0396c5306839459c38d90213f99549f44b7b38 (diff)
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mtk-20170518-6fe93904b09c8c3a9fea5a72c21b1c1ddf6b16bf.tar.gz
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Read the size of the available memory from parameters passed to the kernel by firmware.
SVN-Revision: 18604
Diffstat (limited to 'target/linux/amazon/files/arch')
-rw-r--r--target/linux/amazon/files/arch/mips/amazon/prom.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/target/linux/amazon/files/arch/mips/amazon/prom.c b/target/linux/amazon/files/arch/mips/amazon/prom.c
index f138bcb..c5db4f5 100644
--- a/target/linux/amazon/files/arch/mips/amazon/prom.c
+++ b/target/linux/amazon/files/arch/mips/amazon/prom.c
@@ -59,12 +59,28 @@ void prom_printf(const char * fmt, ...)
void __init prom_init(void)
{
+ char **envp = (char **) fw_arg2;
+
+ int memsize = 16; /* assume 16M as default */
+
mips_machgroup = MACH_GROUP_INFINEON;
mips_machtype = MACH_INFINEON_AMAZON;
+ envp = (char **)KSEG1ADDR((unsigned long)envp);
+ while (*envp) {
+ char *e = (char *)KSEG1ADDR(*envp);
+
+ if (!strncmp(e, "memsize=", 8)) {
+ e += 8;
+ memsize = simple_strtoul(e, NULL, 10);
+ }
+ envp++;
+ }
+ memsize *= 1024 * 1024;
+
strcpy(&(arcs_cmdline[0]), "console=ttyS0,115200 rootfstype=squashfs,jffs2");
- add_memory_region(0x00000000, 0x1000000, BOOT_MEM_RAM);
+ add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
}
void prom_free_prom_memory(void)