From 6fe93904b09c8c3a9fea5a72c21b1c1ddf6b16bf Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sun, 29 Nov 2009 16:53:50 +0000 Subject: [PATCH] Read the size of the available memory from parameters passed to the kernel by firmware. SVN-Revision: 18604 --- .../linux/amazon/files/arch/mips/amazon/prom.c | 18 +++++++++++++++++- .../210-remove_unnedded_variables.patch | 12 ++++++------ 2 files changed, 23 insertions(+), 7 deletions(-) diff --git a/target/linux/amazon/files/arch/mips/amazon/prom.c b/target/linux/amazon/files/arch/mips/amazon/prom.c index f138bcbef4..c5db4f5cdc 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) diff --git a/target/linux/amazon/patches-2.6.30/210-remove_unnedded_variables.patch b/target/linux/amazon/patches-2.6.30/210-remove_unnedded_variables.patch index c2c7fbd3af..3683a27325 100644 --- a/target/linux/amazon/patches-2.6.30/210-remove_unnedded_variables.patch +++ b/target/linux/amazon/patches-2.6.30/210-remove_unnedded_variables.patch @@ -1,12 +1,12 @@ --- a/arch/mips/amazon/prom.c +++ b/arch/mips/amazon/prom.c -@@ -59,9 +59,6 @@ void prom_printf(const char * fmt, ...) +@@ -63,9 +63,6 @@ void __init prom_init(void) + + int memsize = 16; /* assume 16M as default */ - void __init prom_init(void) - { - mips_machgroup = MACH_GROUP_INFINEON; - mips_machtype = MACH_INFINEON_AMAZON; - - strcpy(&(arcs_cmdline[0]), "console=ttyS0,115200 rootfstype=squashfs,jffs2"); - - add_memory_region(0x00000000, 0x1000000, BOOT_MEM_RAM); + envp = (char **)KSEG1ADDR((unsigned long)envp); + while (*envp) { + char *e = (char *)KSEG1ADDR(*envp); -- 2.30.2