Re: [U-Boot] [PATCH 20/39] x86: Emit post codes in startup code

2014-11-07 Thread Bin Meng
Hi Simon, On Fri, Nov 7, 2014 at 4:20 AM, Simon Glass s...@chromium.org wrote: On x86 it is common to use 'post codes' which are 8-bit hex values emitted from the code and visible to the user. Traditionally two 7-segment displays were made available on the motherboard to show the last post

Re: [U-Boot] [PATCH 20/39] x86: Emit post codes in startup code

2014-11-07 Thread Simon Glass
Hi Bin, On 7 November 2014 06:37, Bin Meng bmeng...@gmail.com wrote: Hi Simon, On Fri, Nov 7, 2014 at 4:20 AM, Simon Glass s...@chromium.org wrote: On x86 it is common to use 'post codes' which are 8-bit hex values emitted from the code and visible to the user. Traditionally two 7-segment

[U-Boot] [PATCH 20/39] x86: Emit post codes in startup code

2014-11-06 Thread Simon Glass
On x86 it is common to use 'post codes' which are 8-bit hex values emitted from the code and visible to the user. Traditionally two 7-segment displays were made available on the motherboard to show the last post code that was emitted. This allows diagnosis of a boot problem since it is possible to