This updates the doc to mention chain-loading an x86 kernel via 'bootefi' command, along with several typos fix.
Signed-off-by: Bin Meng bmeng.cn@gmail.com Reviewed-by: Simon Glass sjg@chromium.org Reviewed-by: Alexander Graf agraf@suse.de
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Changes in v2: None
doc/README.vxworks | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/doc/README.vxworks b/doc/README.vxworks index 1aa8e44..3e08711 100644 --- a/doc/README.vxworks +++ b/doc/README.vxworks @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0+ # # Copyright (C) 2013, Miao Yan miao.yan@windriver.com -# Copyright (C) 2015, Bin Meng bmeng.cn@gmail.com +# Copyright (C) 2015-2018, Bin Meng bmeng.cn@gmail.com
VxWorks Support =============== @@ -15,10 +15,13 @@ For booting old kernels (6.9.x) on PowerPC and ARM, and all kernel versions on other architectures, 'bootvx' shall be used. For booting VxWorks 7 kernels on PowerPC and ARM, 'bootm' shall be used.
+With CONFIG_EFI_LOADER option, it's possible to chain load a VxWorks x86 kernel +via the UEFI boot loader application for VxWorks loaded by 'bootefi' command. + VxWorks 7 on PowerPC and ARM --------------------------- -From VxWorks 7, VxWorks starts adopting device tree as its hardware decription -mechansim (for PowerPC and ARM), thus requiring boot interface changes. +From VxWorks 7, VxWorks starts adopting device tree as its hardware description +mechanism (for PowerPC and ARM), thus requiring boot interface changes. This section will describe the new interface.
For PowerPC, the calling convention of the new VxWorks entry point conforms to @@ -53,6 +56,9 @@ gatewayip, hostname, othbootargs. When using 'bootm', just define "bootargs" in the environment and U-Boot will handle bootline fix up for the kernel dtb automatically.
+When using 'bootefi' to chain load an x86 kernel, the UEFI boot loader +application for VxWorks takes care of the kernel bootline preparation. + Serial console -------------- It's very common that VxWorks BSPs configure a different baud rate for the @@ -63,9 +69,9 @@ look like VxWorks hangs somewhere as nothing outputs on the serial console.
x86-specific information ------------------------ -Before loading an x86 kernel, one additional environment variable need to be -provided. This is "vx_phys_mem_base", which represent the physical memory -base address of VxWorks. +Before direct loading an x86 kernel via 'bootvx', one additional environment +variable need to be provided. This is "vx_phys_mem_base", which represent the +physical memory base address of VxWorks.
Check VxWorks kernel configuration to look for LOCAL_MEM_LOCAL_ADRS. For VxWorks 7, this is normally a virtual address and you need find out its