[Macchiato] Latest EFI hangs writing efivars

[Riku Voipio]

Hi,

I had nice success with Marcin's armada-wip-variables branch with
debian-installer. Not I tried to udpate my build to latest EFI for
spectre fixes and updated device tree.

Good news: updating EFI in spi using fupdate command works.
Bad news: grub-install hangs

Reading EFI variables seem to work, bit ,ami

Stracing what grub-install does:

[pid  1533] execve("/bin/efibootmgr", ["efibootmgr", "-q", "-c", "-d",
"/dev/sda", "-p", "1", "-w", "-L", "debian", "-l",
"\\EFI\\debian\\grubaa64.efi"], 0xaaaafb90f6f0 /* 14 vars */) = 0
[pid  1533] close(3)                    = 0
[pid  1533] openat(AT_FDCWD,
"/sys/firmware/efi/efivars/Boot0001-8be4df61-93ca-11d2-aa0d-00e098032b8c",
O_WRONLY|O_CREAT|O_EXCL, 0644) = 3
[pid  1533] ioctl(3, FS_IOC_GETFLAGS, 0xffffc2be8694) = 0
[pid  1533] write(3,
"\7\0\0\0\1\0\0\0d\0d\0e\0b\0i\0a\0n\0\0\0\4\1*\0\1\0\0\0"..., 124
... hang - hard enough that even magic sysrq doesn't respond in serial.

This is both with latest debian-installer mini.iso (with 4.15 kernel)
as well as with older 4.14 kernel.

Build at:

https://people.debian.org/~riku/mcbin/machhiatobin_uefi.bin

EFI log from serial for versions etc:

tarting CP-1 IOROM 1.07
Booting from SPI NOR flash 1 (0x32)
Found valid image at boot postion 0x000
lNOTICE:  Starting binary extension
NOTICE:  SVC: SW Revision 0x0. SVC is not supported
mv_ddr: mv_ddr-armada-17.10.4-gcc280f0 (Mar 12 2018 - 10:16:49)
mv_ddr: completed successfully
NOTICE:  Cold boot
NOTICE:  Booting Trusted Firmware
NOTICE:  BL1: v1.3(release):armada-17.10.7:43965481
NOTICE:  BL1: Built : 22:19:25, Feb  8 2018
NOTICE:  BL1: Booting BL2
lNOTICE:  BL2: v1.3(release):armada-17.10.7:43965481
NOTICE:  BL2: Built : 22:19:25, Feb  8 2018
BL2: Initiating SCP_BL2 transfer to SCP
NOTICE:  SCP_BL2 contains 2 concatenated images
NOTICE:  Load image to CP1 MSS
NOTICE:  Loading MSS image from address 0x4023020 Size 0x1378 to MSS
at 0xf4280000
NOTICE:  Done
NOTICE:  Load image to AP MSS
NOTICE:  Loading MSS image from address 0x4024398 Size 0x1f68 to MSS
at 0xf0580000
00
N

FreeRTOS 7.3.0 - Marvell cm3 - A8K release armada-17.10.1

OTICE:  Done
NOTICE:  SCP Image doesn't contain PM firmware
NOTICE:  BL1: Booting BL31
lNOTICE:  MSS PM is not supported in this build
NOTICE:  BL31: v1.3(release):armada-17.10.7:43965481
NOTICE:  BL31: Built : 22:19:25, Feb  8 2018
lUEFI firmware (version MARVELL_EFI built at 10:14:47 on Mar 12 2018)

Armada 8040 MachiatoBin Platform Init

Comphy0-0: PCIE0         5 Gbps
Comphy0-1: PCIE0         5 Gbps
Comphy0-2: PCIE0         5 Gbps
Comphy0-3: PCIE0         5 Gbps
Comphy0-4: SFI           10.31 Gbps
Comphy0-5: SATA1         5 Gbps

Comphy1-0: SGMII1        1.25 Gbps
Comphy1-1: SATA2         5 Gbps
Comphy1-2: USB3_HOST0    5 Gbps
Comphy1-3: SATA3         5 Gbps
Comphy1-4: SFI           10.31 Gbps
Comphy1-5: SGMII2        3.125 Gbps

UTMI PHY 0 initialized to USB Host0
UTMI PHY 1 initialized to USB Host1
UTMI PHY 0 initialized to USB Host0
RTC: Initialize controller 1
Skip I2c chip 0
Detected w25q32bv SPI flash with page size 256 B, erase size 4 KB, total 4 MB
Succesfully installed protocol interfaces
ramdisk:blckio install. Status=Success
Tianocore/EDK2 firmware version MARVELL_EFI
Press ESCAPE for boot options going to start mss_periodic_ihb_wa for mss
...error: no suitable video mode found.