lupyuen/nuttx-sg2000
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Lee Lup Yuen 2024-05-07 23:05:03 +08:00
parent 85c2d53aa4
commit b40d92d180
1 changed files with 26 additions and 9 deletions
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@ -322,7 +322,10 @@ fdt addr ${fdt_addr_r}
## ramdisk_addr_r=0x81600000 ## ramdisk_addr_r=0x81600000
## ramdisk_size=0x1000000 ## ramdisk_size=0x1000000
## fdt_addr_r=0x81200000 ## fdt_addr_r=0x81200000
booti ${kernel_addr_r} ${ramdisk_addr_r}:${ramdisk_size} ${fdt_addr_r} booti ${kernel_addr_r} - ${fdt_addr_r}
## For Linux: We need the RAM Disk Address
## booti ${kernel_addr_r} ${ramdisk_addr_r}:${ramdisk_size} ${fdt_addr_r}
``` ```
_What happens when we run it at the U-Boot Command Prompt?_ _What happens when we run it at the U-Boot Command Prompt?_
@ -378,7 +381,7 @@ Loading: #################################################################
done done
Bytes transferred = 8354816 (7f7c00 hex) Bytes transferred = 8354816 (7f7c00 hex)
$ booti ${kernel_addr_r} ${ramdisk_addr_r}:${ramdisk_size} ${fdt_addr_r} $ booti ${kernel_addr_r} - ${fdt_addr_r}
## Flattened Device Tree blob at 81200000 ## Flattened Device Tree blob at 81200000
Booting using the fdt blob at 0x81200000 Booting using the fdt blob at 0x81200000
Loading Ramdisk to 9e27f000, end 9f27f000 ... OK Loading Ramdisk to 9e27f000, end 9f27f000 ... OK
@ -623,21 +626,24 @@ Bytes transferred = 50235 (c43b hex)
## TODO: NuttX doesn't need the Device Tree. Remove this. ## TODO: NuttX doesn't need the Device Tree. Remove this.
$ fdt addr ${fdt_addr_r} $ fdt addr ${fdt_addr_r}
## Boot NuttX from RAM ## Boot NuttX from RAM. RAM Disk Address must be `-`!
$ booti ${kernel_addr_r} ${ramdisk_addr_r}:${ramdisk_size} ${fdt_addr_r} $ booti ${kernel_addr_r} - ${fdt_addr_r}
## For Linux: We need the RAM Disk Address
## booti ${kernel_addr_r} ${ramdisk_addr_r}:${ramdisk_size} ${fdt_addr_r}
``` ```
Or in a single line... Or in a single line...
```bash ```bash
setenv tftp_server 192.168.31.10 ; dhcp ${kernel_addr_r} ${tftp_server}:Image-sg2000 ; tftpboot ${fdt_addr_r} ${tftp_server}:jh7110-star64-pine64.dtb ; fdt addr ${fdt_addr_r} ; booti ${kernel_addr_r} ${ramdisk_addr_r}:${ramdisk_size} ${fdt_addr_r} setenv tftp_server 192.168.31.10 ; dhcp ${kernel_addr_r} ${tftp_server}:Image-sg2000 ; tftpboot ${fdt_addr_r} ${tftp_server}:jh7110-star64-pine64.dtb ; fdt addr ${fdt_addr_r} ; $ booti ${kernel_addr_r} - ${fdt_addr_r}
``` ```
NuttX boots a tiny bit, and prints `123` yay! NuttX boots a tiny bit, and prints `123` yay!
```bash ```bash
## Boot NuttX from RAM ## Boot NuttX from RAM
$ booti ${kernel_addr_r} ${ramdisk_addr_r}:${ramdisk_size} ${fdt_addr_r} $ booti ${kernel_addr_r} - ${fdt_addr_r}
## Flattened Device Tree blob at 81200000 ## Flattened Device Tree blob at 81200000
Booting using the fdt blob at 0x81200000 Booting using the fdt blob at 0x81200000
@ -839,15 +845,26 @@ at file: machine/risc-v/arch_elf.c:494
task: AppBringUp process: Kernel 0x80200f34 task: AppBringUp process: Kernel 0x80200f34
``` ```
Oops we goofed and used the wrong U-Boot Command. Watch what happens when we use the correct U-Boot Command... Oops we goofed and used the wrong U-Boot Command...
```bash
## Nope! This won't work for NuttX. RAM Disk Address must be `-`!
setenv tftp_server 192.168.31.10 ; dhcp ${kernel_addr_r} ${tftp_server}:Image-sg2000 ;
tftpboot ${fdt_addr_r} ${tftp_server}:jh7110-star64-pine64.dtb ; fdt addr ${fdt_addr_r} ;
booti ${kernel_addr_r} ${ramdisk_addr_r}:${ramdisk_size} ${fdt_addr_r}
```
Which overwrites the NuttX Image in RAM. Watch what happens when we use the correct U-Boot Command...
# NuttX Kernel Boots OK on SG2000 # NuttX Kernel Boots OK on SG2000
Here's the correct U-Boot Command... Here's the correct U-Boot Command...
```bash ```bash
setenv tftp_server 192.168.31.10 ; dhcp ${kernel_addr_r} ${tftp_server}:Image-sg2000 ## This works OK for NuttX. RAM Disk Address must be `-`!
tftpboot ${fdt_addr_r} ${tftp_server}:jh7110-star64-pine64.dtb ; fdt addr ${fdt_addr_r} ; booti ${kernel_addr_r} - ${fdt_addr_r} setenv tftp_server 192.168.31.10 ; dhcp ${kernel_addr_r} ${tftp_server}:Image-sg2000 ;
tftpboot ${fdt_addr_r} ${tftp_server}:jh7110-star64-pine64.dtb ; fdt addr ${fdt_addr_r} ;
booti ${kernel_addr_r} - ${fdt_addr_r}
``` ```
NuttX Kernel boots OK on SG2000 yay! NuttX Kernel boots OK on SG2000 yay!