From: Igor Opaniuk <igor.opaniuk@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 2/3] mach-imx: bootaux: add dcache flushing before enabling M4
Date: Thu, 28 Nov 2019 15:56:20 +0200 [thread overview]
Message-ID: <20191128135621.12719-2-igor.opaniuk@gmail.com> (raw)
In-Reply-To: <20191128135621.12719-1-igor.opaniuk@gmail.com>
From: Igor Opaniuk <igor.opaniuk@toradex.com>
This patch fixes the issue with broken bootaux command,
when M4 binary is loaded and data cache isn't flushed
before M4 core is enabled.
Reproducing:
> tftpboot ${loadaddr} ${board_name}/hello_world.bin
> cp.b ${loadaddr} 0x7F8000 $filesize
> bootaux 0x7F8000
Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
---
arch/arm/mach-imx/imx_bootaux.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/mach-imx/imx_bootaux.c b/arch/arm/mach-imx/imx_bootaux.c
index ee786f7d06..c750cee60c 100644
--- a/arch/arm/mach-imx/imx_bootaux.c
+++ b/arch/arm/mach-imx/imx_bootaux.c
@@ -27,6 +27,8 @@ int arch_auxiliary_core_up(u32 core_id, ulong boot_private_data)
writel(stack, M4_BOOTROM_BASE_ADDR);
writel(pc, M4_BOOTROM_BASE_ADDR + 4);
+ flush_dcache_all();
+
/* Enable M4 */
#ifdef CONFIG_IMX8M
call_imx_sip(IMX_SIP_SRC, IMX_SIP_SRC_M4_START, 0, 0, 0);
--
2.17.1
next prev parent reply other threads:[~2019-11-28 13:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-28 13:56 [U-Boot] [PATCH v2 1/3] mach-imx: bootaux: print stack pointer and reset vector Igor Opaniuk
2019-11-28 13:56 ` Igor Opaniuk [this message]
2019-12-03 14:32 ` [U-Boot] [PATCH v2 2/3] mach-imx: bootaux: add dcache flushing before enabling M4 Oleksandr Suvorov
2019-12-29 10:25 ` sbabic at denx.de
2019-11-28 13:56 ` [U-Boot] [PATCH v2 3/3] mach-imx: bootaux: elf firmware support Igor Opaniuk
2019-12-03 14:37 ` Oleksandr Suvorov
2019-12-27 15:45 ` Stefano Babic
2019-12-28 12:33 ` Stefano Babic
2019-12-30 12:04 ` Igor Opaniuk
2019-12-30 12:23 ` Stefano Babic
2019-12-03 14:33 ` [U-Boot] [PATCH v2 1/3] mach-imx: bootaux: print stack pointer and reset vector Oleksandr Suvorov
2019-12-29 10:25 ` sbabic at denx.de
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