From dd7ef911b398d96a7b9f2fb26f741045538d7d9b Mon Sep 17 00:00:00 2001 From: Cédric Le Goater Date: Fri, 29 Jan 2021 12:17:19 +0100 Subject: ppc/pnv: Set default RAM size to 1 GB The memory layout of the PowerNV machine is defined as : #define KERNEL_LOAD_BASE ((void *)0x20000000) #define KERNEL_LOAD_SIZE 0x08000000 #define INITRAMFS_LOAD_BASE KERNEL_LOAD_BASE + KERNEL_LOAD_SIZE #define INITRAMFS_LOAD_SIZE 0x08000000 #define SKIBOOT_BASE 0x30000000 #define SKIBOOT_SIZE 0x01c10000 #define CPU_STACKS_BASE (SKIBOOT_BASE + SKIBOOT_SIZE) #define STACK_SHIFT 15 #define STACK_SIZE (1 << STACK_SHIFT) The overall size of the CPU stacks is (max PIR + 1) * 32K and the machine easily reaches 800MB of minimum required RAM. Any value below will result in a skiboot crash : [ 0.034949905,3] MEM: Partial overlap detected between regions: [ 0.034959039,3] MEM: ibm,firmware-stacks [0x31c10000-0x3a450000] (new) [ 0.034968576,3] MEM: ibm,firmware-allocs-memory@0 [0x31c10000-0x38400000] [ 0.034980367,3] Out of memory adding skiboot reserved areas [ 0.035074945,3] *********************************************** [ 0.035093627,3] < assert failed at core/mem_region.c:1129 > [ 0.035104247,3] . [ 0.035108025,3] . [ 0.035111651,3] . [ 0.035115231,3] OO__) [ 0.035119198,3] <"__/ [ 0.035122980,3] ^ ^ Signed-off-by: Cédric Le Goater Message-Id: <20210129111719.790692-1-clg@kaod.org> Reviewed-by: Greg Kurz Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: David Gibson --- hw/ppc/pnv.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'hw/ppc') diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 50810df838..77af846cdf 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -21,6 +21,7 @@ #include "qemu-common.h" #include "qemu/datadir.h" #include "qemu/units.h" +#include "qemu/cutils.h" #include "qapi/error.h" #include "sysemu/qtest.h" #include "sysemu/sysemu.h" @@ -725,8 +726,11 @@ static void pnv_init(MachineState *machine) DeviceState *dev; /* allocate RAM */ - if (machine->ram_size < (1 * GiB)) { - warn_report("skiboot may not work with < 1GB of RAM"); + if (machine->ram_size < mc->default_ram_size) { + char *sz = size_to_str(mc->default_ram_size); + error_report("Invalid RAM size, should be bigger than %s", sz); + g_free(sz); + exit(EXIT_FAILURE); } memory_region_add_subregion(get_system_memory(), 0, machine->ram); @@ -1994,7 +1998,7 @@ static void pnv_machine_class_init(ObjectClass *oc, void *data) * RAM defaults to less than 2048 for 32-bit hosts, and large * enough to fit the maximum initrd size at it's load address */ - mc->default_ram_size = INITRD_LOAD_ADDR + INITRD_MAX_SIZE; + mc->default_ram_size = 1 * GiB; mc->default_ram_id = "pnv.ram"; ispc->print_info = pnv_pic_print_info; nc->nmi_monitor_handler = pnv_nmi; -- cgit v1.2.3-55-g7522