Re: [PATCHv2 7/9] cmd: cpu: add release subcommand

25 Jul 2024

      Hi Zhiqiang,
On Thu, 25 Jul 2024 at 03:32, Zhiqiang Hou Zhiqiang.Hou@nxp.com wrote:
...
From: Hou Zhiqiang Zhiqiang.Hou@nxp.com
Add a new subcommand 'release' to bring up a core to run baremetal
and RTOS applications.
For example on i.MX8M Plus EVK, release the LAST core to run a RTOS
application, passing the sequence number of the CPU core to release,
here it is 3:
    u-boot=> cpu list
      0: cpu@0      NXP i.MX8MP Rev1.1 A53 at 1200 MHz at 31C
  1: cpu@1      NXP i.MX8MP Rev1.1 A53 at 1200 MHz at 30C

  2: cpu@2      NXP i.MX8MP Rev1.1 A53 at 1200 MHz at 31C

  3: cpu@3      NXP i.MX8MP Rev1.1 A53 at 1200 MHz at 31C

u-boot=> load mmc 1:2 C0000000 /hello_world.bin
66008 bytes read in 5 ms (12.6 MiB/s)
u-boot=> dcache flush; icache flush
u-boot=> cpu release 3 C0000000
Released CPU core (mpidr: 0x3) to address 0xc0000000

Signed-off-by: Hou Zhiqiang Zhiqiang.Hou@nxp.com
V2:

No change.

cmd/cpu.c | 44 ++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 42 insertions(+), 2 deletions(-)
Reviewed-by: Simon Glass sjg@chromium.org
While you are here, would you mind adding a doc/usage/cmd/cpu.rst as
that is missing.