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Diffstat (limited to 'doc/README.x86')
| -rw-r--r-- | doc/README.x86 | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/doc/README.x86 b/doc/README.x86 index 4a30f68..0726205 100644 --- a/doc/README.x86 +++ b/doc/README.x86 @@ -218,7 +218,8 @@ works correctly for link though. Test with QEMU -------------- QEMU is a fancy emulator that can enable us to test U-Boot without access to -a real x86 board. To launch QEMU with u-boot.rom, call QEMU as follows: +a real x86 board. Please make sure your QEMU version is 2.3.0 or above test +U-Boot. To launch QEMU with u-boot.rom, call QEMU as follows: $ qemu-system-i386 -nographic -bios path/to/u-boot.rom @@ -239,6 +240,10 @@ supports 3 GiB maximum system memory and reserves the last 1 GiB address space for PCI device memory-mapped I/O and other stuff, so the maximum value of '-m' would be 3072. +QEMU emulates a graphic card which U-Boot supports. Removing '-nographic' will +show QEMU's VGA console window. Note this will disable QEMU's serial output. +If you want to check both consoles, use '-serial stdio'. + CPU Microcode ------------- Modern CPUs usually require a special bit stream called microcode [6] to be |