diff options
Diffstat (limited to 'arch/arm/mach-u300/u300.c')
| -rw-r--r-- | arch/arm/mach-u300/u300.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/mach-u300/u300.c b/arch/arm/mach-u300/u300.c index d2a0b8847a18..bfcda9820888 100644 --- a/arch/arm/mach-u300/u300.c +++ b/arch/arm/mach-u300/u300.c @@ -14,6 +14,7 @@ #include <linux/sched.h> #include <linux/interrupt.h> #include <linux/ioport.h> +#include <linux/memblock.h> #include <linux/platform_device.h> #include <linux/io.h> #include <mach/hardware.h> @@ -22,6 +23,21 @@ #include <asm/mach-types.h> #include <asm/mach/arch.h> +static void __init u300_reserve(void) +{ + /* + * U300 - This platform family can share physical memory + * between two ARM cpus, one running Linux and the other + * running another OS. + */ +#ifdef CONFIG_MACH_U300_SINGLE_RAM +#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) && \ + CONFIG_MACH_U300_2MB_ALIGNMENT_FIX + memblock_reserve(PHYS_OFFSET, 0x00100000); +#endif +#endif +} + static void __init u300_init_machine(void) { u300_init_devices(); @@ -49,6 +65,7 @@ MACHINE_START(U300, MACH_U300_STRING) .io_pg_offst = ((U300_AHB_PER_VIRT_BASE) >> 18) & 0xfffc, .boot_params = BOOT_PARAMS_OFFSET, .map_io = u300_map_io, + .reserve = u300_reserve, .init_irq = u300_init_irq, .timer = &u300_timer, .init_machine = u300_init_machine, |