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m25p80: Add basic support for the SFDP command

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JEDEC STANDARD JESD216 for Serial Flash Discovery Parameters (SFDP)
provides a mean to describe the features of a serial flash device
using a set of internal parameter tables.

This is the initial framework for the RDSFDP command giving access to
a private SFDP area under the flash. This area now needs to be
populated with the flash device characteristics, using a new
'sfdp_read' handler under FlashPartInfo.

Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Message-Id: <20220722063602.128144-2-clg@kaod.org>
Message-Id: <20221013161241.2805140-2-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Cédric Le Goater 2022-10-24 11:20:15 +02:00
parent 104bdaffd7
commit 2389bcc259
4 changed files with 47 additions and 1 deletions
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18
hw/block/m25p80_sfdp.h Normal file
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/*
* M25P80 SFDP
*
* Copyright (c) 2020, IBM Corporation.
*
* This code is licensed under the GPL version 2 or later. See the
* COPYING file in the top-level directory.
*/
#ifndef HW_M25P80_SFDP_H
#define HW_M25P80_SFDP_H
/*
* SFDP area has a 3 bytes address space.
*/
#define M25P80_SFDP_MAX_SIZE (1 << 24)
#endif