From: Lior Weintraub <liorw@pliops.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: "barebox@lists.infradead.org" <barebox@lists.infradead.org>
Subject: ARM: mmu_early_enable
Date: Thu, 17 Aug 2023 06:22:50 +0000 [thread overview]
Message-ID: <PR3P195MB0555EE60DE17128F9831C028C31AA@PR3P195MB0555.EURP195.PROD.OUTLOOK.COM> (raw)
Hi Sascha,
I think I found an issue with the CONFIG_MMU feature.
When the code under barebox_pbl_start calls mmu_early_enable, the MMU is set such that only the given SRAM is defined (membase, memsize).
But then, if DEBUG_LL is in use and the function pr_debug is called we get an exception because the UART address is not included in the MMU.
Is that a misuse by our side or a potential issue in barebox?
If this is an issue with barebox maybe the solution can be:
Get putc_ctx from console.c and if not zero let mmu_early_enable set this region also (with size 0x1000) as a device type.
Cheers,
Lior.
next reply other threads:[~2023-08-17 6:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-17 6:22 Lior Weintraub [this message]
2023-08-17 7:17 ` Sascha Hauer
2023-08-17 7:32 ` Lior Weintraub
2023-08-17 13:49 ` Lior Weintraub
2023-08-21 14:29 ` Lior Weintraub
2023-09-07 8:31 ` Ahmad Fatoum
2023-09-07 10:08 ` Lior Weintraub
2023-12-14 16:04 ` [PATCH] [ARM64][MMU] Fix mmu_early_enable VA->PA mapping Lior Weintraub
2023-12-18 6:52 ` Sascha Hauer
2023-12-18 11:06 ` Sascha Hauer
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