From 2b086ce4a1e7bb35a885b1455239d1b1ee814f97 Mon Sep 17 00:00:00 2001 From: Daniel Schwierzeck Date: Tue, 8 Jan 2013 17:51:11 +0100 Subject: [PATCH] MIPS: qemu-mips: update and fix example usage in README By now U-Boot supports Qemu MIPS for little and big endian as well as 32 bit and 64 bit. Update and fix the example usage in the README to reflect this. Signed-off-by: Daniel Schwierzeck --- board/qemu-mips/README | 28 +++++++++++++++++++++------- 1 file changed, 21 insertions(+), 7 deletions(-) diff --git a/board/qemu-mips/README b/board/qemu-mips/README index ec58ce4..1fdfbab 100644 --- a/board/qemu-mips/README +++ b/board/qemu-mips/README @@ -7,7 +7,7 @@ http://www.nongnu.org/qemu/ Limitations & comments ---------------------- Supports the "-M mips" configuration of qemu: serial,NE2000,IDE. -Support is big endian only for now (or at least this is what I tested). +Supports little and big endian as well as 32 bit and 64 bit. Derived from au1x00 with a lot of things cut out. Supports emulated flash (patch Jean-Christophe PLAGNIOL-VILLARD) with @@ -21,19 +21,33 @@ Notes for the Qemu MIPS port I) Example usage: -# ln -s u-boot.bin mips_bios.bin -start it: -qemu-system-mips -M mips -L . /dev/null -nographic +Using u-boot.bin as ROM (replaces Qemu monitor): -or +32 bit, big endian: +# make qemu_mips +# qemu-system-mips -M mips -bios u-boot.bin -nographic + +32 bit, little endian: +# make qemu_mipsel +# qemu-system-mipsel -M mips -bios u-boot.bin -nographic + +64 bit, big endian: +# make qemu_mips64 +# qemu-system-mips64 -cpu MIPS64R2-generic -M mips -bios u-boot.bin -nographic + +64 bit, little endian: +# make qemu_mips64el +# qemu-system-mips64el -cpu MIPS64R2-generic -M mips -bios u-boot.bin -nographic + +or using u-boot.bin from emulated flash: if you use a qemu version after commit 4224 create image: # dd of=flash bs=1k count=4k if=/dev/zero # dd of=flash bs=1k conv=notrunc if=u-boot.bin -start it: -# qemu-system-mips -M mips -pflash flash -monitor null -nographic +start it (see above): +# qemu-system-mips[64][el] [-cpu MIPS64R2-generic] -M mips -pflash flash -nographic 2) Download kernel + initrd