Re: [U-Boot] [PATCH 2/9] MIPS: fix ROM exception vectors

Daniel Schwierzeck <daniel.schwierz...@gmail.com> writes: > 2016-09-26 9:58 GMT+02:00 Matthew Fortune <matthew.fort...@imgtec.com>: > > Daniel Schwierzeck <daniel.schwierz...@gmail.com> writes: > >> When booting from ROM, early exceptions can't be handled &g

Re: [U-Boot] [PATCH 0/9] MIPS: improve start.S and add exception support

Daniel Schwierzeck writes: > will be simply exited. The SDBBP handler currently only > prints the content of registers c0_depc and c0_debug. This > could be extended in the future to handle semi-hosting > according to the MIPS UHI specification. Thanks for

Re: [U-Boot] [PATCH 2/9] MIPS: fix ROM exception vectors

Daniel Schwierzeck writes: > When booting from ROM, early exceptions can't be handled > properly. Instead of busy-looping give the developer the > possibilty to examine the situation. Thus issue a SDBBP > instruction to transfer control to hardware debugger if one >

Re: [U-Boot] [PATCH v2] MIPS: Hang if run on a secondary CPU

Paul Burton writes: > Some systems are configured such that multiple CPUs begin running from > their reset vector following a system reset. If this occurs then U-Boot > will be run on multiple CPUs simultaneously, which causes all sorts of > issues as the multiple

Re: [U-Boot] [PATCH] MIPS: fix mips_cache fallback without __builtin_mips_cache

Matthias Schiffer writes: > > > > I've disabled the builtin code and compared dissaemblies with and > without your patch. Without your patch, gcc adds an additional store > instruction before each cache instruction. > > > > E.g. for flush_dcache_range(): > > > >

Re: [U-Boot] MIPS UHI spec

James Hogan james.ho...@imgtec.com writes: On 26/02/15 12:37, Daniel Schwierzeck wrote: 2015-02-26 11:17 GMT+01:00 Paul Burton paul.bur...@imgtec.com: On Thu, Feb 19, 2015 at 01:50:23PM +, Matthew Fortune wrote: Hi Daniel, The spec for MIPS Unified Hosting Interface is available

[U-Boot] MIPS UHI spec

Hi Daniel, The spec for MIPS Unified Hosting Interface is available here: http://prplfoundation.org/wiki/MIPS_documentation As we have previously discussed, this is an ideal place to define the handover of device tree data from bootloader to kernel. Using a0 == -2 and defining which register(s)

Re: [U-Boot] Implementing the uBoot SYSCALL interface for MIPS

Hi Daniel, I'm looking for a bit of feedback on my query below. Unless there is a major problem I'll start to organise an implementation for review. Thanks, Matthew -Original Message- From: Matthew Fortune Sent: 08 December 2014 12:43 To: 'u-boot@lists.denx.de' Subject

[U-Boot] Implementing the uBoot SYSCALL interface for MIPS

Hi all, I've been recently working on and promoting a common bare-metal semi-hosting interface for the MIPS architecture. The main goal of this is to allow a bare-metal MIPS application to run on the maximum number of simulation and hardware platforms without (much/any) modification. The