From: Marco Felsch <m.felsch@pengutronix.de>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: BAREBOX <barebox@lists.infradead.org>,
Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: Re: [PATCH v2 03/14] ARM: add exception handling support for PBL
Date: Mon, 30 Jun 2025 10:54:22 +0200 [thread overview]
Message-ID: <20250630085422.wh2wpcxzszg77lrf@pengutronix.de> (raw)
In-Reply-To: <20250630-arm-optee-early-helper-v2-3-c8cce3ae42b0@pengutronix.de>
On 25-06-30, Sascha Hauer wrote:
> Exception handling in PBL can be very useful for debugging PBL code.
> This patch adds support for it.
>
> This is currently only implemented for ARMv7 and ARMv8. Only on these
> architectures we can tell the CPU where the exception table is. On ARMv6
> and older we would have to copy the exception table either to 0x0 or
> 0xffff0000. Not all SoCs have writable memory at these locations, so we
> would have to utilize the MMU to map writable memory there. We are not
> there yet, so for now skip exception handling support on these older
> architectures.
>
> Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
next prev parent reply other threads:[~2025-06-30 9:00 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-30 7:45 [PATCH v2 00/14] i.MX6 TZASC and OP-TEE early helpers Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 01/14] pbl: add panic_no_stacktrace() Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 02/14] arch: Allow data_abort_mask() in PBL Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 03/14] ARM: add exception handling support for PBL Sascha Hauer
2025-06-30 8:54 ` Marco Felsch [this message]
2025-06-30 7:45 ` [PATCH v2 04/14] ARM: i.MX6QDL: add imxcfg helper to configure the TZASC1/2 Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 05/14] ARM: i.MX6Q: add imx6_get_mmdc_sdram_size Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 06/14] ARM: i.MX: add config symbol for TZASC Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 07/14] ARM: mach-imx: tzasc: add region configure helpers Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 08/14] ARM: mach-imx: tzasc: add imx6[q|ul]_tzc380_early_ns_region1() Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 09/14] ARM: mach-imx: tzasc: add imx6[q|ul]_tzc380_is_bypassed() Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 10/14] ARM: i.MX: add imx6_can_access_tzasc() Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 11/14] ARM: optee-early: add mx6_start_optee_early helper Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 12/14] ARM: i.MX: tqma6ulx: fix barebox chainloading with OP-TEE enabled Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 13/14] ARM: i.MX: Webasto ccbv2: " Sascha Hauer
2025-06-30 7:45 ` [PATCH v2 14/14] ARM: i.MX: tqma6ulx: use ENTRY_FUNCTION_WITHSTACK Sascha Hauer
2025-07-02 6:13 ` [PATCH v2 00/14] i.MX6 TZASC and OP-TEE early helpers Sascha Hauer
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