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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 8/8] ARM: nxp-imx8mq-evk: Update comments
Date: Thu, 22 Aug 2019 14:51:58 +0200	[thread overview]
Message-ID: <20190822125158.10296-9-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20190822125158.10296-1-s.hauer@pengutronix.de>

The comments mention contents of register r0, this is outdated. We
base our decisions on the current EL. Update the comments.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/boards/nxp-imx8mq-evk/lowlevel.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boards/nxp-imx8mq-evk/lowlevel.c b/arch/arm/boards/nxp-imx8mq-evk/lowlevel.c
index 46dba16ec3..9d060fb589 100644
--- a/arch/arm/boards/nxp-imx8mq-evk/lowlevel.c
+++ b/arch/arm/boards/nxp-imx8mq-evk/lowlevel.c
@@ -88,11 +88,9 @@ static __noreturn noinline void nxp_imx8mq_evk_start(void)
 		setup_uart();
 
 	/*
-	 * if register r0 does not contain 1, we are running for the first time
-	 * and need to initialize the DRAM, install the trampoline and run TF-A
-	 * (BL31).
-	 * Otherwise the 1 indicates that the DRAM setup and trampoline are
-	 * already installed and TF-A has been run. In this case we can skip
+	 * If we are in EL3 we are running for the first time and need to
+	 * initialize the DRAM and run TF-A (BL31). The TF-A will then jump
+	 * to DRAM in EL2.
 	 */
 	if (current_el() == 3) {
 		nxp_imx8mq_evk_sram_setup();
@@ -103,6 +101,7 @@ static __noreturn noinline void nxp_imx8mq_evk_start(void)
 		 */
 		memcpy((void *)MX8MQ_ATF_BL33_BASE_ADDR, _text, __bss_start - _text);
 		imx8mq_atf_load_bl31(bl31, bl31_size);
+		/* not reached */
 	}
 
 	imx8_get_boot_source(&src, &instance);
-- 
2.20.1


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  parent reply	other threads:[~2019-08-22 12:52 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-22 12:51 [PATCH 0/8] i.MX8 EVK patches Sascha Hauer
2019-08-22 12:51 ` [PATCH 1/8] ARM: aarch64: Fixup relocation table for the second relocation Sascha Hauer
2019-08-22 13:09   ` Rouven Czerwinski
2019-08-22 12:51 ` [PATCH 2/8] ARM: aarch64: Fix get_runtime_offset after relocation Sascha Hauer
2019-08-22 13:08   ` Rouven Czerwinski
2019-08-22 20:14   ` Andrey Smirnov
2019-08-23  8:11     ` Sascha Hauer
2019-08-22 12:51 ` [PATCH 3/8] pbl: Move piggy verification into pbl_barebox_uncompress() Sascha Hauer
2019-08-22 13:07   ` Rouven Czerwinski
2019-08-22 12:51 ` [PATCH 4/8] ARM: i.MX: imx8-ddrc: Remove debug code Sascha Hauer
2019-08-22 13:04   ` Rouven Czerwinski
2019-08-22 12:51 ` [PATCH 5/8] ARM: nxp-imx8mq-evk: Remove duplicate call to imx8mq_cpu_lowlevel_init() Sascha Hauer
2019-08-22 13:03   ` Rouven Czerwinski
2019-08-22 12:51 ` [PATCH 6/8] ARM: nxp-imx8mq-evk: Replace trampoline Sascha Hauer
2019-08-22 13:03   ` Rouven Czerwinski
2019-08-22 12:51 ` [PATCH 7/8] ARM: i.MX8: Fix piggydata loading Sascha Hauer
2019-08-22 13:02   ` Rouven Czerwinski
2019-08-22 12:51 ` Sascha Hauer [this message]
2019-08-22 12:59   ` [PATCH 8/8] ARM: nxp-imx8mq-evk: Update comments Rouven Czerwinski
2019-08-22 13:19 ` [PATCH 0/8] i.MX8 EVK patches Rouven Czerwinski

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