From: Philippe Mathieu-Daudé <f4...@amsat.org>
The hardware expects DIMM slots of 1 or 2 GB, allowing up to
4 GB of memory. We want to accept the same amount of memory the
hardware can deal with. DIMMs of 768MB are not available.
However we have to deal with a firmware limitation: currently
SeaBIOS only supports 32-bit, and expects the RAM size in a
32-bit register. When using a 4GB configuration, the 32-bit
register get truncated and we report a size of 0MB to SeaBIOS,
which ends halting the machine:
$ qemu-system-hppa -m 4g -serial stdio
SeaBIOS: Machine configured with too little memory (0 MB), minimum is 16 MB.
SeaBIOS wants SYSTEM HALT.
The easiest way is to restrict the machine to 3GB of memory.
Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Acked-by: Helge Deller <del...@gmx.de>
Signed-off-by: Igor Mammedov <imamm...@redhat.com>
---
hw/hppa/machine.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c
index 6775d87..119ae4d 100644
--- a/hw/hppa/machine.c
+++ b/hw/hppa/machine.c
@@ -90,12 +90,11 @@ static void machine_hppa_init(MachineState *machine)
g_free(name);
}
- /* Limit main memory. */
- if (ram_size > FIRMWARE_START) {
- machine->ram_size = ram_size = FIRMWARE_START;
- }
-
/* Main memory region. */
+ if (machine->ram_size > 3 * GiB) {
+ error_report("RAM size is currently restricted to 3GB");
+ exit(EXIT_FAILURE);
+ }
ram_region = g_new(MemoryRegion, 1);
memory_region_allocate_system_memory(ram_region, OBJECT(machine),
"ram", ram_size);
--
2.7.4
