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The NAND's SYS volume holds the bootloader's firmware and is hidden unless a build defines HAVE_RK27XX_NAND_SYS. Getting at it, e.g. to replace BASE.RKW, needed a special build. Add "NAND SYS on next USB" to the debug menu. While it is set, the next USB connection shows SYS through the USER drive, as "NAND SYS", and the switch clears when that connection ends. It is decided once per connection, so setting it while connected waits for the next one, and it is held in RAM only. Writes still need FTL_ALLOW_WRITE. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Change-Id: Idda3f1c5e00bea511618021397a6cb3bb0be7361
63 lines
2.2 KiB
C
63 lines
2.2 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2009 by Michael Sparmann
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __FTL_TARGET_H__
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#define __FTL_TARGET_H__
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#include "config.h"
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#include "inttypes.h"
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#include <stdbool.h>
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/* The drives the NAND presents: USER, and SYS only when the target exposes
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* it - see HAVE_RK27XX_NAND_SYS in the target config. */
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#ifdef HAVE_RK27XX_NAND_SYS
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#define FTL_DRIVE_SYS 0
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#define FTL_DRIVE_USER 1
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#define FTL_NUM_DRIVES 2
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#else
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#define FTL_DRIVE_USER 0
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#define FTL_NUM_DRIVES 1
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#endif
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#if !defined(HAVE_RK27XX_NAND_SYS) && !defined(BOOTLOADER) \
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&& defined(USB_ENABLE_STORAGE)
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/* Without SYS as a drive of its own, the debug menu can ask for it to be
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* shown to a USB host in place of USER, for one connection: the next one,
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* or the current one if none has started. Kept in RAM only. */
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#define FTL_SYS_ON_USB
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void ftl_set_sys_on_usb(bool on);
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bool ftl_get_sys_on_usb(void);
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#endif
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uint32_t ftl_init(void);
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uint32_t ftl_read(int drive, uint32_t sector, uint32_t count, void* buffer);
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uint32_t ftl_write(int drive, uint32_t sector, uint32_t count,
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const void* buffer);
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uint32_t ftl_sync(void);
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/* Usable sectors on a logical disk, 0 if not mounted. Comes from the FTL's
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* own tables, not from raw block geometry - see ftl-rk27xx.c. */
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uint32_t ftl_get_sectors(int drive);
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/* Whether a drive shows the SYS volume right now */
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bool ftl_drive_is_sys(int drive);
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#endif
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