Lost serial console after kernel starts init May 02, 2020 03:04PM |
Registered: 7 years ago Posts: 119 |
## Booting kernel from Legacy Image at 81000000 ... Image Name: Linux 3.18.123 Image Type: MIPS Linux Kernel Image (uncompressed) Data Size: 2165421 Bytes = 2.1 MiB Load Address: 81000000 Entry Point: 81000000 Verifying Checksum ... OK Loading Kernel Image [ 0.000000] Linux version 3.18.123-meraki-elemental (hmartin@alp) (gcc version 5.4.0 (GCC) ) #42 Fri May 1 16:09:10 UTC 2020 [ 0.000000] bootconsole [early0] enabled [ 0.000000] CPU0 revision is: 02019654 (MIPS 24KEc) [ 0.000000] Determined physical RAM map: [ 0.000000] memory: 00477000 @ 00100000 (usable) [ 0.000000] memory: 00049000 @ 00577000 (usable after init) [ 0.000000] User-defined physical RAM map: [ 0.000000] memory: 07ff0000 @ 00000000 (usable) [ 0.000000] Zone ranges: [ 0.000000] Normal [mem 0x00000000-0x07feffff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x00000000-0x07feffff] [ 0.000000] Initmem setup node 0 [mem 0x00000000-0x07feffff] [ 0.000000] Reserving 0MB of memory at 0MB for crashkernel [ 0.000000] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes. [ 0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32496 [ 0.000000] Kernel command line: console=ttyS0,115200 mtdparts=m25p80:0x80000(uboot),0x40000(uboot-env),0x40000(uboot-conf),0x300000(kernel), 0x800000(squashfs),0x400000(jffs2) root=/dev/mtdblock5 rootfstype=squashfs mem=134152192 [ 0.000000] PID hash table entries: 512 (order: -1, 2048 bytes) [ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes) [ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes) [ 0.000000] Writing ErrCtl register=80000811 [ 0.000000] Readback ErrCtl register=80000811 [ 0.000000] Cache parity protection enabled [ 0.000000] Memory: 123832K/131008K available (3633K kernel code, 187K rwdata, 740K rodata, 292K init, 119K bss, 7176K reserved, 0K cma-reser ved) [ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] NR_IRQS:66 [ 0.000000] sched_clock: 32 bits at 1kHz, resolution 1000000ns, wraps every 2147483648000000ns [ 0.002000] Calibrating delay loop... 275.45 BogoMIPS (lpj=137728) [ 0.013000] pid_max: default: 32768 minimum: 301 [ 0.014000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.015000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.018000] ftrace: allocating 11996 entries in 24 pages [ 0.046000] Performance counters: mips/24K PMU enabled, 2 32-bit counters available to each CPU, irq -1 (share with timer interrupt) [ 0.053000] devtmpfs: initialized [ 0.059000] NET: Registered protocol family 16 [ 0.094000] Switched to clocksource MIPS [ 0.133000] NET: Registered protocol family 2 [ 0.140000] TCP established hash table entries: 1024 (order: 0, 4096 bytes) [ 0.147000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes) [ 0.153000] TCP: Hash tables configured (established 1024 bind 1024) [ 0.160000] TCP: reno registered [ 0.163000] UDP hash table entries: 256 (order: 0, 4096 bytes) [ 0.169000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes) [ 0.175000] NET: Registered protocol family 1 [ 0.183000] VCORE-III Watchdog Timer enabled (30 seconds). Prev boot was not caused by WDT reset. [ 0.194000] futex hash table entries: 256 (order: -1, 3072 bytes) [ 0.253000] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 0.259000] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc. [ 0.266000] msgmni has been set to 241 [ 0.295000] io scheduler noop registered [ 0.299000] io scheduler deadline registered (default) [ 0.313000] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled [ 0.328000] console [ttyS0] disabled [ 0.331000] serial8250.0: ttyS0 at MMIO 0x70100000 (irq = 14, base_baud = 13020833) is a 16550A [ 0.340000] console [ttyS0] enabled [ 0.340000] console [ttyS0] enabled [ 0.347000] bootconsole [early0] disabled [ 0.347000] bootconsole [early0] disabled [ 0.364000] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xf1 [ 0.371000] nand: Micron MT29F1G08ABADAWP [ 0.375000] nand: 128MiB, SLC, page size: 2048, OOB size: 64 [ 0.386000] Scanning device for bad blocks [ 0.510000] m25p80 spi0.1: found mx25l12805d, expected m25p80 [ 0.516000] m25p80 spi0.1: mx25l12805d (16384 Kbytes) [ 0.521000] 6 cmdlinepart partitions found on MTD device m25p80 [ 0.527000] Creating 6 MTD partitions on "m25p80": [ 0.532000] 0x000000000000-0x000000080000 : "uboot" [ 0.542000] 0x000000080000-0x0000000c0000 : "uboot-env" [ 0.551000] 0x0000000c0000-0x000000100000 : "uboot-conf" [ 0.562000] 0x000000100000-0x000000400000 : "kernel" [ 0.571000] 0x000000400000-0x000000c00000 : "squashfs" [ 0.583000] 0x000000c00000-0x000001000000 : "jffs2" [ 0.591000] tun: Universal TUN/TAP device driver, 1.6 [ 0.597000] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com> [ 0.608000] i2c /dev entries driver [ 0.614000] TCP: cubic registered [ 0.617000] Initializing XFRM netlink socket [ 0.624000] NET: Registered protocol family 10 [ 0.632000] NET: Registered protocol family 17 [ 0.632000] NET: Registered protocol family 17 [ 0.637000] NET: Registered protocol family 15 [ 0.641000] 8021q: 802.1Q VLAN Support v1.8 [ 0.646000] Meraki MS220-8 board detected [ 0.655000] i2c-gpio i2c-gpio.1: using pins 6 (SDA) and 5 (SCL) [ 0.669000] devtmpfs: mounted [ 0.706000] VFS: Mounted root (squashfs filesystem) readonly on device 31:5. [ 0.756000] devtmpfs: mounted [ 0.764000] Freeing unused kernel memory: 292K [ 4.191000] devpts: called with bogus options [ 5.654000] random: dropbear urandom read with 85 bits of entropy available [ 125.920000] random: nonblocking pool is initialized
[ 4.779000] S05printk starting; userspace is alive [ 5.689000] random: dropbear urandom read with 85 bits of entropy available [ 7.356000] Hello from S51printk; userspace is alive but serial is broken
[ 1.664000] VFS: Mounted root (squashfs filesystem) readonly on device 31:3. [ 1.695000] devtmpfs: mounted [ 1.703000] Freeing unused kernel memory: 292K init started: BusyBox v1.25.1 (2018-08-24 12:51:28 PDT) BusyBox v1.25.1 (2018-08-24 12:51:28 PDT) built-in shell (ash)
# Put a getty on the serial port ttyS0::respawn:/sbin/getty -L ttyS0 115200 vt100 # GENERIC_SERIAL
Re: Lost serial console after kernel starts init May 02, 2020 04:51PM |
Admin Registered: 13 years ago Posts: 19,011 |
Re: Lost serial console after kernel starts init May 02, 2020 06:19PM |
Admin Registered: 13 years ago Posts: 19,011 |
Quote
# Put a getty on the serial port
ttyS0::respawn:/sbin/getty -L ttyS0 115200 vt100 # GENERIC_SERIAL
T0:2345:respawn:/sbin/getty -L ttyS0 115200 linux
T0:2345:respawn:/sbin/getty -L ttyS0 115200 linux s0:2345:respawn:/sbin/agetty -L -f /etc/issueserial 9600 ttyS0 vt100
Re: Lost serial console after kernel starts init May 02, 2020 06:25PM |
Admin Registered: 13 years ago Posts: 19,011 |
CONFIG_EARLY_PRINTK=y
[ 0.000000] Kernel command line: console=ttyS0,115200 mtdparts=m25p80:0x80000(uboot),0x40000(uboot-env),0x40000(uboot-conf),0x300000(kernel), 0x800000(squashfs),0x400000(jffs2) root=/dev/mtdblock5 rootfstype=squashfs mem=134152192 earlyprintk=serial
Re: Lost serial console after kernel starts init May 02, 2020 07:08PM |
Admin Registered: 13 years ago Posts: 19,011 |
Quote
But this. doesn't. make. sense. The bootloader shouldn't have anything to do with the handover between the kernel and init/userspace.
Re: Lost serial console after kernel starts init May 03, 2020 09:38AM |
Registered: 7 years ago Posts: 119 |
Quote
ttyS0 might be wrong, should be S0.
S0::respawn:/sbin/getty -L ttyS0 115200 vt100
Quote
If this kernel was compiled with earlyprintk, then add earlyprintk=serial to bootargs. It migh show a little more in the bootlog.
## Booting kernel from Legacy Image at 81000000 ... Image Name: Linux 3.18.123 Image Type: MIPS Linux Kernel Image (uncompressed) Data Size: 2166588 Bytes = 2.1 MiB Load Address: 81000000 Entry Point: 81000000 Verifying Checksum ... OK Loading Kernel Image [ 0.000000] Linux version 3.18.123-meraki-elemental (hmartin@alp) (gcc version 5.4.0 (GCC) ) #43 Sun May 3 08:31:46 UTC 2020 [ 0.000000] bootconsole [early0] enabled [ 0.000000] CPU0 revision is: 02019654 (MIPS 24KEc) [ 0.000000] Determined physical RAM map: [ 0.000000] memory: 00477000 @ 00100000 (usable) [ 0.000000] memory: 00049000 @ 00577000 (usable after init) [ 0.000000] Wasting 8192 bytes for tracking 256 unused pages
[ 7.474000] S99 starting; we print stuff [ 7.481000] Now we print /dev [ 7.501000] total 0 [ 7.505000] crw------- 1 root root 5, 1 Jan 1 00:00 console [ 7.514000] crw------- 1 root root 10, 63 Jan 1 00:00 cpu_dma_latency [ 7.524000] lrwxrwxrwx 1 root root 13 Jan 1 00:00 fd -> /proc/self/fd [ 7.535000] crw-rw-rw- 1 root root 1, 7 Jan 1 00:00 full [ 7.544000] crw------- 1 root root 89, 1 Jan 1 00:00 i2c-1 [ 7.553000] crw------- 1 root root 1, 2 Jan 1 00:00 kmem [ 7.562000] crw-r--r-- 1 root root 1, 11 Jan 1 00:00 kmsg [ 7.571000] srw-rw-rw- 1 root root 0 Jan 1 00:00 log [ 7.580000] crw------- 1 root root 1, 1 Jan 1 00:00 mem [ 7.589000] crw------- 1 root root 10, 60 Jan 1 00:00 memory_bandwidth [ 7.599000] crw------- 1 root root 90, 0 Jan 1 00:00 mtd0 [ 7.608000] crw------- 1 root root 90, 1 Jan 1 00:00 mtd0ro [ 7.617000] crw------- 1 root root 90, 2 Jan 1 00:00 mtd1 [ 7.626000] crw------- 1 root root 90, 3 Jan 1 00:00 mtd1ro [ 7.635000] crw------- 1 root root 90, 4 Jan 1 00:00 mtd2 [ 7.644000] crw------- 1 root root 90, 5 Jan 1 00:00 mtd2ro [ 7.653000] crw------- 1 root root 90, 6 Jan 1 00:00 mtd3 [ 7.662000] crw------- 1 root root 90, 7 Jan 1 00:00 mtd3ro [ 7.671000] crw------- 1 root root 90, 8 Jan 1 00:00 mtd4 [ 7.680000] crw------- 1 root root 90, 9 Jan 1 00:00 mtd4ro [ 7.689000] crw------- 1 root root 90, 10 Jan 1 00:00 mtd5 [ 7.698000] crw------- 1 root root 90, 11 Jan 1 00:00 mtd5ro [ 7.707000] crw------- 1 root root 90, 12 Jan 1 00:00 mtd6 [ 7.716000] crw------- 1 root root 90, 13 Jan 1 00:00 mtd6ro [ 7.725000] brw------- 1 root root 31, 0 Jan 1 00:00 mtdblock0 [ 7.734000] brw------- 1 root root 31, 1 Jan 1 00:00 mtdblock1 [ 7.744000] brw------- 1 root root 31, 2 Jan 1 00:00 mtdblock2 [ 7.753000] brw------- 1 root root 31, 3 Jan 1 00:00 mtdblock3 [ 7.763000] brw------- 1 root root 31, 4 Jan 1 00:00 mtdblock4 [ 7.771000] brw------- 1 root root 31, 5 Jan 1 00:00 mtdblock5 [ 7.781000] brw------- 1 root root 31, 6 Jan 1 00:00 mtdblock6 [ 7.791000] drwxr-xr-x 2 root root 60 Jan 1 00:00 net [ 7.799000] crw------- 1 root root 10, 62 Jan 1 00:00 network_latency [ 7.810000] crw------- 1 root root 10, 61 Jan 1 00:00 network_throughput [ 7.819000] crw-rw-rw- 1 root root 1, 3 Jan 1 00:00 null [ 7.829000] crw-rw-rw- 1 root root 5, 2 Jan 1 00:00 ptmx [ 7.837000] drwxr-xr-x 2 root root 0 Jan 1 00:00 pts [ 7.846000] crw-rw-rw- 1 root root 1, 8 Jan 1 00:00 random [ 7.855000] brw------- 1 root root 31, 5 Jan 1 00:00 root [ 7.864000] drwxrwxrwx 2 root root 40 Jan 1 00:00 shm [ 7.873000] lrwxrwxrwx 1 root root 15 Jan 1 00:00 stderr -> /proc/self/fd/2 [ 7.886000] lrwxrwxrwx 1 root root 15 Jan 1 00:00 stdin -> /proc/self/fd/0 [ 7.898000] lrwxrwxrwx 1 root root 15 Jan 1 00:00 stdout -> /proc/self/fd/1 [ 7.909000] crw-rw-rw- 1 root root 5, 0 Jan 1 00:00 tty [ 7.918000] crw------- 1 root root 4, 64 Jan 1 00:00 ttyS0 [ 7.927000] crw------- 1 root root 4, 65 Jan 1 00:00 ttyS1 [ 7.936000] crw------- 1 root root 4, 66 Jan 1 00:00 ttyS2 [ 7.945000] crw------- 1 root root 5, 3 Jan 1 00:00 ttyprintk [ 7.954000] crw------- 1 root root 10, 59 Jan 1 00:00 ubi_ctrl [ 7.964000] crw-rw-rw- 1 root root 1, 9 Jan 1 00:00 urandom [ 7.972000] crw------- 1 root root 10, 130 Jan 1 00:00 watchdog [ 7.982000] crw-rw-rw- 1 root root 1, 5 Jan 1 00:00 zero
[ 7.994000] Now we print /proc/iomem [ 8.009000] 00000000-07feffff : System RAM [ 8.013000] 00000000-00000000 : Crash kernel [ 8.018000] 00100000-0048ce43 : Kernel code [ 8.023000] 0048ce44-0057614f : Kernel data [ 8.028000] 40000000-4fffffff : Serial interface [ 8.033000] 50000000-5fffffff : Parallel interface [ 8.038000] 50000000-50000010 : gen_nand.0 [ 8.043000] 50000000-50000010 : gen_nand.0 [ 8.048000] 60000000-60ffffff : Switch registers [ 8.053000] 70000000-701fffff : CPU Registers [ 8.057000] 70100000-7010001f : serial
Quote
However, depending on the SoC, u-boot have several parameters that used by the kernel that are not visible to us in bootargs. When we look ATAG param that passed to the kernel, there are registers values/locations that are implicitly agreed upon, i.e. bootloader-kernel protocol. Things such as internal registers memory map address that also might not be in ATAG either. And that would affect UART address too.
Re: Lost serial console after kernel starts init May 03, 2020 04:34PM |
Admin Registered: 13 years ago Posts: 19,011 |
Quote
Redboot would boot vmlinux but not vmlinuz
Quote
The kernel is compiled with CONFIG_EARLY_PRINTK=y, but if I add earlyprintk=serial I lose output even earlier :(
## Booting kernel from Legacy Image at 81000000 ...
Image Name: Linux 3.18.123
Image Type: MIPS Linux Kernel Image (uncompressed)
Data Size: 2166588 Bytes = 2.1 MiB
Load Address: 81000000
Entry Point: 81000000
Verifying Checksum ... OK
Loading Kernel Image
[ 0.000000] Linux version 3.18.123-meraki-elemental (hmartin@alp) (gcc version 5.4.0 (GCC) ) #43 Sun May 3 08:31:46 UTC
2020
[ 0.000000] bootconsole [early0] enabled
[ 0.000000] CPU0 revision is: 02019654 (MIPS 24KEc)
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 00477000 @ 00100000 (usable)
[ 0.000000] memory: 00049000 @ 00577000 (usable after init)
[ 0.000000] Wasting 8192 bytes for tracking 256 unused pages
Re: Lost serial console after kernel starts init May 03, 2020 04:54PM |
Admin Registered: 13 years ago Posts: 19,011 |
CONFIG_SERIAL_8250_NR_UARTS=1 CONFIG_SERIAL_8250_RUNTIME_UARTS=1
CONFIG_TTY_PRINTK=y
Re: Lost serial console after kernel starts init May 14, 2020 06:48AM |
Registered: 7 years ago Posts: 119 |
Quote
Does this u-boot has a "mem" command?
luton # mem DRAM: 128 MiB luton # meminfo DRAM: 128 MiB
Quote
The u-boot and kernel handover occur after it loads and start the kernel. The params data remained as the input to the kernel. It tells the kernel where things are to go and read.
/* * Very very very ugly. We should be the only thing that installed * a wired mapping, so it is safe for us to remove it. However, * if there are other wired mappings, we should just warn about * it and do nothing. There are only 16 TLBs on the VCore-III * so using a wired TLB is a bad idea. */
[ 0.856000] devtmpfs: mounted [ 0.856000] devtmpfs: mounted [ 0.867000] Freeing unused kernel memory: 292K [ 0.873000] Reserved instruction in kernel code[#1]:
Re: Lost serial console after kernel starts init May 14, 2020 04:43PM |
Admin Registered: 13 years ago Posts: 19,011 |
> luton # mem > DRAM: 128 MiB > luton # meminfo > DRAM: 128 MiB >
Re: Lost serial console after kernel starts init June 09, 2020 03:15PM |
Registered: 7 years ago Posts: 119 |
Re: Lost serial console after kernel starts init June 09, 2020 04:33PM |
Admin Registered: 13 years ago Posts: 19,011 |
Quote
Try setting this number to 4.
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250_RUNTIME_UARTS=1
And I don't think you need the tty_printk
CONFIG_TTY_PRINTK=y
Re: Lost serial console after kernel starts init June 09, 2020 04:52PM |
Admin Registered: 13 years ago Posts: 19,011 |
Marvell>> map CPU Interface ------------- SDRAM_CS0 ....base 00000000, size 512MB SDRAM_CS1 ....base 20000000, size 512MB SDRAM_CS2 ....disable SDRAM_CS3 ....disable DEVICE_CS0 ....no such DEVICE_CS1 ....no such DEVICE_CS2 ....no such DEVICE_CS3 ....no such PEX0_MEM ....base b0000000, size 32MB PEX0_IO ....no such PEX1_MEM ....base b2000000, size 32MB PEX1_IO ....no such INTER_REGS ....base d0000000, size 1MB DMA_UART ....no such SPI_CS0 ....base f4000000, size 16MB SPI_CS1 ....no such SPI_CS2 ....no such SPI_CS3 ....no such SPI_CS4 ....no such SPI_CS5 ....no such SPI_CS6 ....no such SPI_CS7 ....no such BOOT_ROM_CS ....base f8000000, size 1MB DEV_BOOTCS ....base fd000000, size 16MB PMU_SCRATCHPAD ....no such CRYPT0_ENG ....base c8010000, size 64KB AHB To MBUS Bridge: ------------------- win0 - PEX0_MEM base b0000000, ....size 32MB win1 - PEX1_MEM base b2000000, ....size 32MB win2 - disable win3 - disable win4 - disable win5 - disable win6 - disable win7 - disable win8 - SPI_CS0 base f4000000, ....size 16MB win9 - DEV_BOOTCS base fd000000, ....size 16MB win10 - CRYPT0_ENG base c8010000, ....size 64KB win11 - disable win12 - disable win13 - BOOT_ROM_CS base f8000000, ....size 1MB win14 - disable win15 - disable win16 - disable win17 - disable win18 - disable win19 - disable win20 - INTER_REGS base d0000000, ....size 1MB PEX0: ----- Pex Bars Internal Regs Bar0.... base d0000000, size 1MB DRAM Bar1............. base 00000000, size 1GB Devices Bar2.......... disable Pex Decode Windows win0 - SDRAM_CS0 base 00000000, ....size 512MB win1 - SDRAM_CS1 base 20000000, ....size 512MB win2 - disable win3 - disable win4 - disable win5 - disable default win - SDRAM_CS0 Expansion ROM - SDRAM_CS0 PEX1: ----- Pex Bars Internal Regs Bar0.... base d0000000, size 1MB DRAM Bar1............. base 00000000, size 1GB Devices Bar2.......... disable Pex Decode Windows win0 - SDRAM_CS0 base 00000000, ....size 512MB win1 - SDRAM_CS1 base 20000000, ....size 512MB win2 - disable win3 - disable win4 - disable win5 - disable default win - SDRAM_CS0 Expansion ROM - SDRAM_CS0 USB 0: ---- win0 - SDRAM_CS0 base 00000000, ....size 512MB win1 - SDRAM_CS1 base 20000000, ....size 512MB win2 - PEX0_MEM base b0000000, ....size 32MB win3 - disable USB 1: ---- win0 - SDRAM_CS0 base 00000000, ....size 512MB win1 - SDRAM_CS1 base 20000000, ....size 512MB win2 - PEX0_MEM base b0000000, ....size 32MB win3 - disable ETH 0: ---- win0 - SDRAM_CS0 base 00000000, ....size 512MB win1 - SDRAM_CS1 base 20000000, ....size 512MB win2 - disable win3 - disable win4 - disable win5 - disable ETH 1: ---- win0 - SDRAM_CS0 base 00000000, ....size 512MB win1 - SDRAM_CS1 base 20000000, ....size 512MB win2 - disable win3 - disable win4 - disable win5 - disable XOR 0: ---- win0 - SDRAM_CS0 base 00000000, ....size 512MB win1 - SDRAM_CS1 base 20000000, ....size 512MB win2 - PEX0_MEM base b0000000, ....size 32MB win3 - PEX1_MEM base b2000000, ....size 32MB win4 - disable win5 - disable win6 - disable win7 - disable XOR 1: ---- win0 - SDRAM_CS0 base 00000000, ....size 512MB win1 - SDRAM_CS1 base 20000000, ....size 512MB win2 - PEX0_MEM base b0000000, ....size 32MB win3 - PEX1_MEM base b2000000, ....size 32MB win4 - disable win5 - disable win6 - disable win7 - disable Sata 0: ---- win0 - SDRAM_CS0 base 00000000, ....size 256MB win1 - SDRAM_CS1 base 10000000, ....size 256MB win2 - SDRAM_CS2 base 20000000, ....size 256MB win3 - SDRAM_CS3 base 30000000, ....size 256MB Sata 1: ---- win0 - SDRAM_CS0 base 00000000, ....size 256MB win1 - SDRAM_CS1 base 10000000, ....size 256MB win2 - SDRAM_CS2 base 20000000, ....size 256MB win3 - SDRAM_CS3 base 30000000, ....size 256MB Marvell>>
DEV_BOOTCS ....base fd000000, size 16MB
Re: Lost serial console after kernel starts init June 10, 2020 01:56AM |
Registered: 7 years ago Posts: 119 |
Re: Lost serial console after kernel starts init June 10, 2020 04:42AM |
Admin Registered: 13 years ago Posts: 19,011 |
/usr/src/u-boot-2017.07-tld/cmd
/usr/src/u-boot-2017.07-tld# cat ./board/cloudengines/pogo_v4/pogo_v4.c | tail -40 break; case BOOTSTAGE_ID_NET_ETH_START: /* Ethernet initialization */ set_leds(GREEN_LED, GREEN_LED); break; default: if (val < 0) /* error */ set_leds(RED_LED, RED_LED); break; } } #if defined(CONFIG_KIRKWOOD_GPIO) /* Return GPIO button status */ /* un-pressed: gpio-29 (Eject Button ) in hi (act lo) - IRQ edge (clear ) pressed gpio-29 (Eject Button ) in lo (act hi) - IRQ edge (clear ) */ static int do_read_button(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { if (strcmp(argv[1], "eject") == 0) { kw_gpio_set_valid(BTN_EJECT, GPIO_INPUT_OK); kw_gpio_direction_input(BTN_EJECT); return kw_gpio_get_value(BTN_EJECT); } else return -1; } U_BOOT_CMD(button, 2, 0, do_read_button, "Return GPIO button status 0=off 1=on", "- button eject: test buttons states\n" ); #endif