From a5d9e7a62884d4a1121795f928232fe13431b769 Mon Sep 17 00:00:00 2001 From: Asami Doi Date: Thu, 22 Aug 2019 14:11:17 +0900 Subject: mainboard/emulation/qemu-aarch64: Update DRAM_SIZE_MB MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit DRAM_SIZE_MB should be the maximum size (255GiB / -m 261120M) that’s possible with QEMU on AArch64 virt because it tries to search the DRAM_SIZE_MB range to find the true memory size. Signed-off-by: Asami Doi Change-Id: Id479c0b18d1e1adceecdcca13e36119b95617e6d Reviewed-on: https://review.coreboot.org/c/coreboot/+/35024 Tested-by: build bot (Jenkins) Reviewed-by: Raul Rangel --- Documentation/mainboard/emulation/qemu-aarch64.md | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'Documentation/mainboard') diff --git a/Documentation/mainboard/emulation/qemu-aarch64.md b/Documentation/mainboard/emulation/qemu-aarch64.md index ee4c9e7a3b..4df36a9944 100644 --- a/Documentation/mainboard/emulation/qemu-aarch64.md +++ b/Documentation/mainboard/emulation/qemu-aarch64.md @@ -7,7 +7,7 @@ as a payload for QEMU/AArch64. ```bash qemu-system-aarch64 -bios ./build/coreboot.rom \ -M virt,secure=on,virtualization=on -cpu cortex-a53 \ - -nographic -m 8912M + -nographic -m 8192M ``` - The default CPU in QEMU for AArch64 is a cortex-a15 which is 32-bit @@ -17,6 +17,7 @@ have the right to access EL3/EL2 registers. You need to enable EL3/EL2 via `-machine secure=on,virtualization=on`. - You need to specify the size of memory more than 544 MiB because 512 MiB is reserved for the kernel. +- The maximum size of memory is 255GiB (-m 261120). ## Building coreboot with an arbitrary FIT payload There are 3 steps to make coreboot.rom for QEMU/AArch64. If you select @@ -30,7 +31,7 @@ You can get the DTB from QEMU with the following command. ``` $ qemu-system-aarch64 \ -M virt,dumpdtb=virt.dtb,secure=on,virtualization=on \ - -cpu cortex-a53 -nographic -m 2048M + -cpu cortex-a53 -nographic -m 8192M ``` ### 2. Build a FIT image with a DTB -- cgit v1.2.3