From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0577D220F38 for ; Tue, 24 Feb 2026 15:39:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771947573; cv=none; b=qyyPTfx/EILpI1yXoIBmXFFwO6QoRP5IKQqcDYnoUUFFzeWRb3mGtnJ4Mvq9tqLSN2ySHCuuu7cnlC8Ywb7Pa9i0O3P5rdXJp44C+FlRzGtdEO8gH13mTf4f1L0rI667WC5Rs7UDVVoRWZ5LIy+fDG/slUSm5PK5Tb+12cY/F8E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771947573; c=relaxed/simple; bh=F33cmMw8QgcBvaDT7U3nVndApBI3V5VbWFuMOCfXKn8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=jdcDkxz3++dsrTvfpx5TosOZuefEu67o0viSGFxWEVV/FRSA/om1XKbw3wi0CAuclrgGm92TaobVk0v3yFKMrYmjvSjiHzIDaQUo9ODftwVhBl497VP8mz0OsX+zmKb6KC6kQkSVzkykSS65EQWqHqqRL+qGY3aWG/pUrVYuKyg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=AC6qPINI; arc=none smtp.client-ip=198.175.65.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="AC6qPINI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1771947572; x=1803483572; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=F33cmMw8QgcBvaDT7U3nVndApBI3V5VbWFuMOCfXKn8=; b=AC6qPINIVUuJHmedKf7zJtHc/Kk1jdadQMFmZpQ+CJWuizetiS+BgBoV +fZ7qzlyPbRELcPbM9sEWHushKkaBFkp+u0PEitCRQp1zEFKQ1xo0Ubfs uqmB1EcIm3+8MgGRA3szdddfjwHpsmA8F3+aWGpc87bvqNyqzm0+qMuQO QHSfebQjpGUiYbZLL/fra7XhC5wAOjvpH82wLo9goiN/diDi9ZI3FsDj6 bQ+g4sa0flHUvZIv1auhUmsulySIlKF3S6AxeTMdBJgvLfXdWEG1HC2E1 HayZsRQHPTsc+090JzfSM32GJ5JuMxrl/N943Smgkkf5O60cDDFTP5q8R Q==; X-CSE-ConnectionGUID: nhO9lhNFQV+MQ/S84zGxOQ== X-CSE-MsgGUID: yxXFDCOuRdeMhQCdMEfvFQ== X-IronPort-AV: E=McAfee;i="6800,10657,11711"; a="84059200" X-IronPort-AV: E=Sophos;i="6.21,308,1763452800"; d="scan'208";a="84059200" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Feb 2026 07:39:32 -0800 X-CSE-ConnectionGUID: QUDZCH6PTMOZf1+dcEKW1w== X-CSE-MsgGUID: ZP1rp3ZzR1aQ4LvsAiHk1Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,308,1763452800"; d="scan'208";a="215035154" Received: from black.igk.intel.com ([10.91.253.5]) by orviesa006.jf.intel.com with ESMTP; 24 Feb 2026 07:39:30 -0800 Received: by black.igk.intel.com (Postfix, from userid 1003) id 5F7CA98; Tue, 24 Feb 2026 16:39:28 +0100 (CET) From: Andy Shevchenko To: linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org Cc: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Randy Dunlap , Andy Shevchenko Subject: [PATCH v1 1/1] mtd: physmap: physmap-bt1-rom: Remove not-going-to-be-supported code for Baikal SoC Date: Tue, 24 Feb 2026 16:39:27 +0100 Message-ID: <20260224153927.3627867-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit As noticed in the discussion [1] the Baikal SoC and platforms are not going to be finalized, hence remove stale code. Link: https://lore.kernel.org/lkml/22b92ddf-6321-41b5-8073-f9c7064d3432@infradead.org/ [1] Signed-off-by: Andy Shevchenko --- drivers/mtd/maps/Kconfig | 11 --- drivers/mtd/maps/Makefile | 1 - drivers/mtd/maps/physmap-bt1-rom.c | 125 ----------------------------- drivers/mtd/maps/physmap-bt1-rom.h | 17 ---- 4 files changed, 154 deletions(-) delete mode 100644 drivers/mtd/maps/physmap-bt1-rom.c delete mode 100644 drivers/mtd/maps/physmap-bt1-rom.h diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 8a8b19874e23..99d5ff9a1fbe 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -75,17 +75,6 @@ config MTD_PHYSMAP_OF physically into the CPU's memory. The mapping description here is taken from OF device tree. -config MTD_PHYSMAP_BT1_ROM - bool "Baikal-T1 Boot ROMs OF-based physical memory map handling" - depends on MTD_PHYSMAP_OF - depends on MIPS_BAIKAL_T1 || COMPILE_TEST - select MTD_COMPLEX_MAPPINGS - select MULTIPLEXER - select MUX_MMIO - help - This provides some extra DT physmap parsing for the Baikal-T1 - platforms, some detection and setting up ROMs-specific accessors. - config MTD_PHYSMAP_VERSATILE bool "ARM Versatile OF-based physical memory map handling" depends on MTD_PHYSMAP_OF diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile index 019f1e92cc41..51af1d2ebd52 100644 --- a/drivers/mtd/maps/Makefile +++ b/drivers/mtd/maps/Makefile @@ -19,7 +19,6 @@ obj-$(CONFIG_MTD_TSUNAMI) += tsunami_flash.o obj-$(CONFIG_MTD_PXA2XX) += pxa2xx-flash.o obj-$(CONFIG_MTD_PHYSMAP) += physmap.o physmap-y := physmap-core.o -physmap-$(CONFIG_MTD_PHYSMAP_BT1_ROM) += physmap-bt1-rom.o physmap-$(CONFIG_MTD_PHYSMAP_VERSATILE) += physmap-versatile.o physmap-$(CONFIG_MTD_PHYSMAP_GEMINI) += physmap-gemini.o physmap-$(CONFIG_MTD_PHYSMAP_IXP4XX) += physmap-ixp4xx.o diff --git a/drivers/mtd/maps/physmap-bt1-rom.c b/drivers/mtd/maps/physmap-bt1-rom.c deleted file mode 100644 index 60dccc48f99e..000000000000 --- a/drivers/mtd/maps/physmap-bt1-rom.c +++ /dev/null @@ -1,125 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2020 BAIKAL ELECTRONICS, JSC - * - * Authors: - * Serge Semin - * - * Baikal-T1 Physically Mapped Internal ROM driver - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "physmap-bt1-rom.h" - -/* - * Baikal-T1 SoC ROMs are only accessible by the dword-aligned instructions. - * We have to take this into account when implementing the data read-methods. - * Note there is no need in bothering with endianness, since both Baikal-T1 - * CPU and MMIO are LE. - */ -static map_word __xipram bt1_rom_map_read(struct map_info *map, - unsigned long ofs) -{ - void __iomem *src = map->virt + ofs; - unsigned int shift; - map_word ret; - u32 data; - - /* Read data within offset dword. */ - shift = (uintptr_t)src & 0x3; - data = readl_relaxed(src - shift); - if (!shift) { - ret.x[0] = data; - return ret; - } - ret.x[0] = data >> (shift * BITS_PER_BYTE); - - /* Read data from the next dword. */ - shift = 4 - shift; - if (ofs + shift >= map->size) - return ret; - - data = readl_relaxed(src + shift); - ret.x[0] |= data << (shift * BITS_PER_BYTE); - - return ret; -} - -static void __xipram bt1_rom_map_copy_from(struct map_info *map, - void *to, unsigned long from, - ssize_t len) -{ - void __iomem *src = map->virt + from; - unsigned int shift, chunk; - u32 data; - - if (len <= 0 || from >= map->size) - return; - - /* Make sure we don't go over the map limit. */ - len = min_t(ssize_t, map->size - from, len); - - /* - * Since requested data size can be pretty big we have to implement - * the copy procedure as optimal as possible. That's why it's split - * up into the next three stages: unaligned head, aligned body, - * unaligned tail. - */ - shift = (uintptr_t)src & 0x3; - if (shift) { - chunk = min_t(ssize_t, 4 - shift, len); - data = readl_relaxed(src - shift); - memcpy(to, (char *)&data + shift, chunk); - src += chunk; - to += chunk; - len -= chunk; - } - - while (len >= 4) { - data = readl_relaxed(src); - memcpy(to, &data, 4); - src += 4; - to += 4; - len -= 4; - } - - if (len) { - data = readl_relaxed(src); - memcpy(to, &data, len); - } -} - -int of_flash_probe_bt1_rom(struct platform_device *pdev, - struct device_node *np, - struct map_info *map) -{ - struct device *dev = &pdev->dev; - - /* It's supposed to be read-only MTD. */ - if (!of_device_is_compatible(np, "mtd-rom")) { - dev_info(dev, "No mtd-rom compatible string\n"); - return 0; - } - - /* Multiplatform guard. */ - if (!of_device_is_compatible(np, "baikal,bt1-int-rom")) - return 0; - - /* Sanity check the device parameters retrieved from DTB. */ - if (map->bankwidth != 4) - dev_warn(dev, "Bank width is supposed to be 32 bits wide\n"); - - map->read = bt1_rom_map_read; - map->copy_from = bt1_rom_map_copy_from; - - return 0; -} diff --git a/drivers/mtd/maps/physmap-bt1-rom.h b/drivers/mtd/maps/physmap-bt1-rom.h deleted file mode 100644 index 6782899598a4..000000000000 --- a/drivers/mtd/maps/physmap-bt1-rom.h +++ /dev/null @@ -1,17 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -#include -#include - -#ifdef CONFIG_MTD_PHYSMAP_BT1_ROM -int of_flash_probe_bt1_rom(struct platform_device *pdev, - struct device_node *np, - struct map_info *map); -#else -static inline -int of_flash_probe_bt1_rom(struct platform_device *pdev, - struct device_node *np, - struct map_info *map) -{ - return 0; -} -#endif -- 2.50.1