talos-skiboot/external, branch master

opal-prd : Add options to set OCC in overclock mode

2018-04-30T08:55:23+00:00

This option sets the OCC in characterization mode and the changes the governor to performance. This patch adds two new sub-options to 'occ' sub-command Signed-off-by: Shilpasri G Bhat

Add new LPC-based devmem-aspeed utility

2018-04-30T08:55:23+00:00

mambo: Add persistent memory disk support

2018-04-30T00:49:22+00:00

This adds support to for mapping disks images using persistent memory. Disks can be added by setting this ENV variable: PMEM_DISK="/mydisks/disk1.img,/mydisks/disk2.img" These will show up in Linux as /dev/pmem0 and /dev/pmem1. This uses a new feature in mambo "mysim memory mmap .." which is only available since mambo commit 0131f0fc08 (from 24/4/2018). This also needs the of_pmem.c driver in Linux which is only available since v4.17. It works with powernv_defconfig + CONFIG_OF_PMEM. ie --- a/arch/powerpc/configs/powernv_defconfig +++ b/arch/powerpc/configs/powernv_defconfig @@ -238,6 +238,8 @@ CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_GENERIC=y CONFIG_VIRTIO_PCI=m CONFIG_VIRTIO_BALLOON=m +CONFIG_LIBNVDIMM=y +# CONFIG_ND_BLK is not set CONFIG_EXT2_FS=y CONFIG_EXT2_FS_XATTR=y CONFIG_EXT2_FS_POSIX_ACL=y Signed-off-by: Michael Neuling Signed-off-by: Stewart Smith

external/mambo: Add di command to decode instructions

2018-04-24T05:11:50+00:00

By default you get 16 instructions but you can specify the number you want. ie systemsim % di 0x100 4 0x0000000000000100: Enc:0xA64BB17D : mtspr HSPRG1,r13 0x0000000000000104: Enc:0xA64AB07D : mfspr r13,HSPRG0 0x0000000000000108: Enc:0xF0092DF9 : std r9,0x9F0(r13) 0x000000000000010C: Enc:0xA6E2207D : mfspr r9,PPR Using di since it's what xmon uses. Signed-off-by: Michael Neuling Signed-off-by: Stewart Smith

mambo/mambo_utils.tcl: Inject an MCE at a specified address

2018-04-20T04:51:02+00:00

Currently we don't support injecting an MCE on a specific address. This is useful for testing functionality like memcpy_mcsafe() (see https://patchwork.ozlabs.org/cover/893339/) The core of the functionality is a routine called inject_mce_ue_on_addr, which takes an addr argument and injects an MCE (load/store with UE) when the specified address is accessed by code. This functionality can easily be enhanced to cover instruction UE's as well. A sample use case to create an MCE on stack access would be set addr [mysim display gpr 1] inject_mce_ue_on_addr $addr This would cause an mce on any r1 or r1 based access Signed-off-by: Balbir Singh Signed-off-by: Stewart Smith

external/mambo: improve helper for machine checks

2018-04-20T04:51:02+00:00

Improve workarounds for stop injection, because mambo often will trigger on 0x104/204 when injecting sreset/mces. This also adds a workaround to skip injecting on reservations to avoid infinite loops when doing inject_mce_step. Signed-off-by: Nicholas Piggin Acked-by: Balbir Singh Signed-off-by: Stewart Smith

external: Add "lpc" tool

2018-04-20T04:51:01+00:00

This is a little front-end to the lpc debugfs files to access the LPC bus from userspace on the host. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Stewart Smith

external/trace: fix makefile

2018-04-19T01:45:25+00:00

Signed-off-by: Stewart Smith

opal-prd: Insert powernv_flash module

2018-04-10T05:38:33+00:00

Explictly load powernv_flash module on BMC based system so that we are sure that flash device is created before starting opal-prd daemon. Note that I have replaced pnor_available() check with is_fsp_system(). As we want to load module on BMC system only. Also pnor_init has enough logic to detect flash device. Hence pnor_available() becomes redundant check. Signed-off-by: Vasant Hegde CC: Jeremy Kerr CC: Stewart Smith Signed-off-by: Stewart Smith

libflash/blocklevel: Make read/write be ECC agnostic for callers

2018-04-10T00:02:11+00:00

The blocklevel abstraction allows for regions of the backing store to be marked as ECC protected so that blocklevel can decode/encode the ECC bytes into the buffer automatically without the caller having to be ECC aware. Unfortunately this abstraction is far from perfect, this is only useful if reads and writes are performed at the start of the ECC region or in some circumstances at an ECC aligned position - which requires the caller be aware of the ECC regions. The problem that has arisen is that the blocklevel abstraction is initialised somewhere but when it is later called the caller is unaware if ECC exists in the region it wants to arbitrarily read and write to. This should not have been a problem since blocklevel knows. Currently misaligned reads will fail ECC checks and misaligned writes will overwrite ECC bytes and the backing store will become corrupted. This patch add the smarts to blocklevel_read() and blocklevel_write() to cope with the problem. Note that ECC can always be bypassed by calling blocklevel_raw_() functions. All this work means that the gard tool can can safely call blocklevel_read() and blocklevel_write() and as long as the blocklevel knows of the presence of ECC then it will deal with all cases. This also commit removes code in the gard tool which compensated for inadequacies no longer present in blocklevel. Signed-off-by: Cyril Bur Tested-by: Pridhiviraj Paidipeddi [stewart: core/flash: Adapt to new libflash ECC API Signed-off-by: Stewart Smith