[kvm-ppc-devel] [PATCH 2 of 2] Fix memory defined in device tree by declaring it dynamically for bamboo board model

[Jerone Y. <jy...@us...>]

# HG changeset patch
# User Jerone Young <jy...@us...>
# Date 1210003411 18000
# Branch merge
# Node ID c455452c9b217abed8a2e6147bbeb91f33ff1799
# Parent  cf3ccc3add69052aade695c746151b1cb8812252
Fix memory defined in device tree by declaring it dynamically for bamboo board model

This fixes a issue where the amount of memory is not properly being defined in the device tree. It currently is hardcoded for 144MB. The result is that if you specify a memory size below the hardcoded size, the guest crashes. This patch now dynamically changes the device tree to the memory value specified.

Signed-off-by: Jerone Young <jy...@us...>

diff --git a/qemu/hw/ppc440_bamboo.c b/qemu/hw/ppc440_bamboo.c
--- a/qemu/hw/ppc440_bamboo.c
+++ b/qemu/hw/ppc440_bamboo.c
@@ -50,6 +50,7 @@ void bamboo_init(ram_addr_t ram_size, in
 	int i=0, k=0;
 	uint32_t cpu_freq;
 	uint32_t timebase_freq;
+	uint32_t mem_reg_property[]={0, 0, ram_size};
 
 	printf("%s: START\n", __func__);
 
@@ -73,6 +74,7 @@ void bamboo_init(ram_addr_t ram_size, in
 		printf("WARNING: %i MB left over memory is ram\n",
 			bytes_to_mb((int)tmp_ram_size));
 		ram_size -= tmp_ram_size;
+		mem_reg_property[2] = ram_size;
 	}
 
 	/* Setup CPU */
@@ -159,6 +161,8 @@ void bamboo_init(ram_addr_t ram_size, in
 	/* manipulate device tree in memory */
 	dt_cell(fdt, "/cpus/cpu@0", "clock-frequency", cpu_freq);
 	dt_cell(fdt, "/cpus/cpu@0", "timebase-frequency", timebase_freq);
+	dt_cell_multi(fdt, "/memory", "reg", mem_reg_property,
+			sizeof(mem_reg_property));
 	dt_cell(fdt, "/chosen", "linux,initrd-start", initrd_base);
 	dt_cell(fdt, "/chosen", "linux,initrd-end",
 				(initrd_base + initrd_size));