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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.x86 | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/doc/README.x86 b/doc/README.x86 index 5fab044..b474161 100644 --- a/doc/README.x86 +++ b/doc/README.x86 @@ -110,9 +110,25 @@ be turned on. Not every device on the board is configured via devie tree, but more and more devices will be added as time goes by. Check out the directory arch/x86/dts/ for these device tree source files. +Useful Commands +--------------- + +In keeping with the U-Boot philosophy of providing functions to check and +adjust internal settings, there are several x86-specific commands that may be +useful: + +hob - Display information about Firmware Support Package (FSP) Hand-off + Block. This is only available on platforms which use FSP, mostly + Atom. +iod - Display I/O memory +iow - Write I/O memory +mtrr - List and set the Memory Type Range Registers (MTRR). These are used to + tell the CPU whether memory is cacheable and if so the cache write + mode to use. U-Boot sets up some reasonable values but you can + adjust then with this command. + TODO List --------- -- MTRR support (for performance) - Audio - Chrome OS verified boot - SMI and ACPI support, to provide platform info and facilities to Linux |