diff options
| author | Vignesh Raghavendra <vigneshr@ti.com> | 2020-02-04 11:09:57 +0530 |
|---|---|---|
| committer | Lokesh Vutla <lokeshvutla@ti.com> | 2020-03-03 13:08:13 +0530 |
| commit | 29ab5d3fb41f1827f0a75536352e1956532025fd (patch) | |
| tree | 9d8b1c4fb3315d8b88d4c3c3e59d47ff139eb9ec /board/ti/am65x | |
| parent | 36a5c8939b9dc8c7b9212a4ee8f6e282fe485f5f (diff) | |
board: ti: Update AM65x and J721e READMEs for OSPI boot
Update AM65x and J721e README files with instructions for flashing OSPI
images.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Diffstat (limited to 'board/ti/am65x')
| -rw-r--r-- | board/ti/am65x/README | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/board/ti/am65x/README b/board/ti/am65x/README index 2e3fd9c4a8..86868e8c70 100644 --- a/board/ti/am65x/README +++ b/board/ti/am65x/README @@ -262,6 +262,61 @@ To boot kernel from eMMC, use the following commands: => setenv bootpart 0 => boot +OSPI: +----- +ROM supports booting from OSPI from offset 0x0. + +Flashing images to OSPI: + +Below commands can be used to download tiboot3.bin, tispl.bin, u-boot.img, +and sysfw.itb over tftp and then flash those to OSPI at their respective +addresses. + +=> sf probe +=> tftp ${loadaddr} tiboot3.bin +=> sf update $loadaddr 0x0 $filesize +=> tftp ${loadaddr} tispl.bin +=> sf update $loadaddr 0x80000 $filesize +=> tftp ${loadaddr} u-boot.img +=> sf update $loadaddr 0x280000 $filesize +=> tftp ${loadaddr} sysfw.itb +=> sf update $loadaddr 0x6C0000 $filesize + +Flash layout for OSPI: + + 0x0 +----------------------------+ + | ospi.tiboot3(512K) | + | | + 0x80000 +----------------------------+ + | ospi.tispl(2M) | + | | + 0x280000 +----------------------------+ + | ospi.u-boot(4M) | + | | + 0x680000 +----------------------------+ + | ospi.env(128K) | + | | + 0x6A0000 +----------------------------+ + | ospi.env.backup (128K) | + | | + 0x6C0000 +----------------------------+ + | ospi.sysfw(1M) | + | | + 0x7C0000 +----------------------------+ + | padding (256k) | + 0x800000 +----------------------------+ + | ospi.rootfs(UBIFS) | + | | + +----------------------------+ + +Kernel Image and DT are expected to be present in the /boot folder of UBIFS +ospi.rootfs just like in SD card case. U-Boot looks for UBI volume named +"rootfs" for rootfs. + +To boot kernel from OSPI, at the U-Boot prompt: +=> setenv boot ubi +=> boot + UART: ----- ROM supports booting from MCU_UART0 via X-Modem protocol. The entire UART-based |