mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-03 06:56:43 +07:00
d5bc813f40
This board has soldered on flash, and a SODIMM flash module. Both can be used for booting, via switching JP12 and SW2.8 and using the sbc8548-altflash.dts when booting from SODIMM. Here we enable MTD in kernel so that we can see the bootloader (and other flash sectors) from linux. Normal configuration: root@sbc8548:~# cat /proc/mtd dev: size erasesize name mtd0: 007a0000 00020000 "space" mtd1: 00060000 00020000 "bootloader" mtd2: 03f00000 00080000 "space" mtd3: 00100000 00080000 "bootloader" root@sbc8548:~# dd if=/dev/mtd1 count=1 bs=48|hexdump -C 1+0 records in 1+0 records out 00000000 27 05 19 56 55 2d 42 6f 6f 74 20 32 30 31 32 2e |'..VU-Boot 2012.| 00000010 31 30 2d 64 69 72 74 79 20 28 4a 61 6e 20 31 39 |10-dirty (Jan 19| 00000020 20 32 30 31 33 20 2d 20 31 39 3a 34 30 3a 31 31 | 2013 - 19:40:11| 00000030 root@sbc8548:~# dd if=/dev/mtd3 count=1 bs=48|hexdump -C 1+0 records in 1+0 records out 00000000 27 05 19 56 55 2d 42 6f 6f 74 20 32 30 31 32 2e |'..VU-Boot 2012.| 00000010 31 30 2d 64 69 72 74 79 20 28 44 65 63 20 31 33 |10-dirty (Dec 13| 00000020 20 32 30 31 32 20 2d 20 31 35 3a 30 30 3a 30 37 | 2012 - 15:00:07| 00000030 root@sbc8548:~# Alternate configuration, with sbc8548-altflash.dts: root@sbc8548:~# cat /proc/mtd dev: size erasesize name mtd0: 03f00000 00080000 "space" mtd1: 00100000 00080000 "bootloader" mtd2: 007a0000 00020000 "space" mtd3: 00060000 00020000 "bootloader" root@sbc8548:~# dd if=/dev/mtd1 count=1 bs=48|hexdump -C 1+0 records in 1+0 records out 00000000 27 05 19 56 55 2d 42 6f 6f 74 20 32 30 31 32 2e |'..VU-Boot 2012.| 00000010 31 30 2d 64 69 72 74 79 20 28 44 65 63 20 31 33 |10-dirty (Dec 13| 00000020 20 32 30 31 32 20 2d 20 31 35 3a 30 30 3a 30 37 | 2012 - 15:00:07| 00000030 root@sbc8548:~# dd if=/dev/mtd3 count=1 bs=48|hexdump -C 1+0 records in 1+0 records out 00000000 27 05 19 56 55 2d 42 6f 6f 74 20 32 30 31 32 2e |'..VU-Boot 2012.| 00000010 31 30 2d 64 69 72 74 79 20 28 4a 61 6e 20 31 39 |10-dirty (Jan 19| 00000020 20 32 30 31 33 20 2d 20 31 39 3a 34 30 3a 31 31 | 2013 - 19:40:11| 00000030 root@sbc8548:~# Note that in the latter, the larger SODIMM device appears 1st, as mtd0 and mtd1, as indicated in the sizes, and in the date of the u-boot image. The kernel configuration is the same in both cases; only the dtb needs to be changed in accordance with the JP12/SW2.8 settings. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
77 lines
1.7 KiB
Plaintext
77 lines
1.7 KiB
Plaintext
CONFIG_PPC_85xx=y
|
|
CONFIG_EXPERIMENTAL=y
|
|
CONFIG_SYSVIPC=y
|
|
CONFIG_LOG_BUF_SHIFT=14
|
|
CONFIG_BLK_DEV_INITRD=y
|
|
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
|
|
CONFIG_EXPERT=y
|
|
CONFIG_SLAB=y
|
|
# CONFIG_BLK_DEV_BSG is not set
|
|
CONFIG_SBC8548=y
|
|
CONFIG_BINFMT_MISC=y
|
|
CONFIG_MATH_EMULATION=y
|
|
CONFIG_SPARSE_IRQ=y
|
|
# CONFIG_SECCOMP is not set
|
|
CONFIG_PCI=y
|
|
CONFIG_NET=y
|
|
CONFIG_PACKET=y
|
|
CONFIG_UNIX=y
|
|
CONFIG_XFRM_USER=y
|
|
CONFIG_INET=y
|
|
CONFIG_IP_MULTICAST=y
|
|
CONFIG_IP_PNP=y
|
|
CONFIG_IP_PNP_DHCP=y
|
|
CONFIG_IP_PNP_BOOTP=y
|
|
CONFIG_SYN_COOKIES=y
|
|
# CONFIG_INET_LRO is not set
|
|
# CONFIG_IPV6 is not set
|
|
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
|
|
# CONFIG_FW_LOADER is not set
|
|
CONFIG_PROC_DEVICETREE=y
|
|
CONFIG_BLK_DEV_LOOP=y
|
|
CONFIG_BLK_DEV_RAM=y
|
|
CONFIG_NETDEVICES=y
|
|
CONFIG_BROADCOM_PHY=y
|
|
CONFIG_NET_ETHERNET=y
|
|
CONFIG_MII=y
|
|
CONFIG_GIANFAR=y
|
|
# CONFIG_INPUT_MOUSEDEV is not set
|
|
# CONFIG_INPUT_KEYBOARD is not set
|
|
# CONFIG_INPUT_MOUSE is not set
|
|
# CONFIG_SERIO is not set
|
|
# CONFIG_VT is not set
|
|
CONFIG_SERIAL_8250=y
|
|
CONFIG_SERIAL_8250_CONSOLE=y
|
|
# CONFIG_HW_RANDOM is not set
|
|
CONFIG_GEN_RTC=y
|
|
CONFIG_VIDEO_OUTPUT_CONTROL=y
|
|
# CONFIG_HID_SUPPORT is not set
|
|
# CONFIG_USB_SUPPORT is not set
|
|
CONFIG_INOTIFY=y
|
|
CONFIG_PROC_KCORE=y
|
|
CONFIG_TMPFS=y
|
|
CONFIG_NFS_FS=y
|
|
CONFIG_ROOT_NFS=y
|
|
# CONFIG_RCU_CPU_STALL_DETECTOR is not set
|
|
CONFIG_SYSCTL_SYSCALL_CHECK=y
|
|
# CONFIG_CRYPTO_ANSI_CPRNG is not set
|
|
CONFIG_MTD=y
|
|
CONFIG_MTD_OF_PARTS=y
|
|
CONFIG_MTD_CHAR=y
|
|
CONFIG_MTD_BLKDEVS=y
|
|
CONFIG_MTD_BLOCK=y
|
|
CONFIG_MTD_CFI=y
|
|
CONFIG_MTD_GEN_PROBE=y
|
|
CONFIG_MTD_CFI_ADV_OPTIONS=y
|
|
CONFIG_MTD_CFI_NOSWAP=y
|
|
CONFIG_MTD_CFI_GEOMETRY=y
|
|
CONFIG_MTD_MAP_BANK_WIDTH_1=y
|
|
CONFIG_MTD_MAP_BANK_WIDTH_2=y
|
|
CONFIG_MTD_MAP_BANK_WIDTH_4=y
|
|
CONFIG_MTD_CFI_I1=y
|
|
CONFIG_MTD_CFI_I2=y
|
|
CONFIG_MTD_CFI_I4=y
|
|
CONFIG_MTD_CFI_INTELEXT=y
|
|
CONFIG_MTD_CFI_UTIL=y
|
|
CONFIG_MTD_PHYSMAP_OF=y
|