diff options
| author | Lucas Stach <l.stach@pengutronix.de> | 2019-12-19 16:19:29 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-12-20 16:16:44 +0100 |
| commit | 7fb7358a41a656ac3f0ffdbba2bdc1927218706d (patch) | |
| tree | 7fc74d73119e210a707aa268474e72fd9eec4b8f /arch | |
| parent | a25da7f9196b66259d0cdb9e8265fcaffa65343a (diff) | |
| download | barebox-7fb7358a41a656ac3f0ffdbba2bdc1927218706d.tar.gz barebox-7fb7358a41a656ac3f0ffdbba2bdc1927218706d.tar.xz | |
ARM: nxp-imx8mq-evk: fix bootflow comment
The comment above nxp_imx8mq_evk_start is no longer accurate, as there
is no trampoline in DRAM anymore. Change the comment to reflect the current
boot flow.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boards/nxp-imx8mq-evk/lowlevel.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/arm/boards/nxp-imx8mq-evk/lowlevel.c b/arch/arm/boards/nxp-imx8mq-evk/lowlevel.c index 213ab70682..eb96c08051 100644 --- a/arch/arm/boards/nxp-imx8mq-evk/lowlevel.c +++ b/arch/arm/boards/nxp-imx8mq-evk/lowlevel.c @@ -48,14 +48,13 @@ static void setup_uart(void) * summary: * * 1. MaskROM uploads PBL into OCRAM and that's where this function is - * executed for the first time + * executed for the first time. At entry the exception level is EL3. * - * 2. DDR is initialized and the TF-A trampoline is installed in the - * DRAM. + * 2. DDR is initialized and the PBL is copied from OCRAM to the TF-A return + * address in DRAM. * - * 3. TF-A is executed and exits into the trampoline in RAM, which enters the - * PBL for the second time. DRAM setup done is indicated by a one in register - * x0 by the trampoline + * 3. TF-A is executed and exits into the PBL code in DRAM. TF-A has taken us + * from EL3 to EL2. * * 4. The piggydata is loaded from the SD card and copied to the expected * location in the DRAM. |