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Date: Tue, 4 Apr 2017 10:25:46 -0700
From: "Tracy Smith, CEO" <contact@...tributedsystemscorp.com>
To: "T. L. Smith" <info@...tributedsystemscorp.com>
Cc: x86@...nel.org, h.peter.anvin@...el.com, ravi.v.shankar@...el.com,
vikas.shivappa@...el.com, fenghua.yu@...el.com,
tony.luck@...el.com,
Vikas Shivappa <vikas.shivappa@...ux.intel.com>,
lkml <linux-kernel@...r.kernel.org>
Subject: X86 4.8 kernel boot questions
Hi All,
The production board I'm using doesn't have a JTAG available,
upgrading to 4.8 from 4.1,.and need to understand why Linux 4.8.3
doesn't boot on a x86_64 corei7-64. Boots with no issues with 4.1.
Hangs at the last message of u-boot, the typical "Starting kernel."
The bootcmd and arguments are given below.
I see a fault FFS and a message indicating the image didn't load after failover.
1) How can I verify if the kernel image was loaded?
2) What is this FFS fault? Where do I find this.
3) Has the bootargs or bootcmd changed between 4.1 and 4.8.3?
4) If the boot cmd/arg has changed, what should the boot cmd/arg be
for 4.8.3 to boot on x86_64 corei7-64?
Initial RAM disk at linear address 0x20000000, size 11638378 bytes
Kernel command line: "BOOT_IMAGE=/imgx/bzImage LABEL=BOOT
root=/dev/ram0 imgmnt=/media/sda2 imgdir=imgx img=image.rootfs
rootdelay=2 slub_debug=F console=ttyS1,115200 bootcount=1
bootcount_addr=0xa4000 acpi_enforce_resources=lax pram_size=0x800000
pram_addr=10000000 pram_loc=ddr crashkernel=128M
memmap=0x800000$0x10000000 "EFI table at 683392c0, mmap 68339300,
mmap size 4c0, version 1, descr. size 0x30
Starting kernel ...
Timer summary in microseconds:
Mark Elapsed Stage
0 0 reset
1 1 board_init_r
105 104 board_init_f
10,180,048 10,179,943 id=64
10,221,985 41,937 id=65
10,356,645 134,660 main_loop
12,366,521 2,009,876 usb_start
18,747,284 6,380,763 start_kernel
Accumulated time:
10,162,689 ahci
On a 4.1.26-yocto-standard #1 SMP it boots with no issues. Basically
same .config used in both cases except for anything deprecated between
4.1 and 4.8.3.
root@:~# cat /proc/cmdline
BOOT_IMAGE=/imgy/bzImage LABEL=BOOT root=/dev/ram0 imgmnt=/media/sda2
imgdir=imgy img=image.rootfs rootdelay=2 slub_debug=F
console=ttyS1,115200 fault=FFS bootcount=3 bootcount_addr=0xa4000
acpi_enforce_resources=lax pram_size=0x800000 pram_addr=10000000
pram_loc=ddr crashkernel=128M memmap=0x800000$0x10000000
root@...3001:~# cat /proc/consoles
ttyS1 -W- (EC p a) 4:65
netcon0 -W- (E )
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