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a01bc0d5f5
Add a remoteproc driver to load the firmware and boot a small Wakeup M3 processor present on TI AM33xx and AM43xx SoCs. This Wakeup M3 remote processor is an integrated Cortex M3 that allows the SoC to enter the lowest possible power state by taking control from the MPU after it has gone into its own low power state and shutting off any additional peripherals. The Wakeup M3 processor has two internal memory regions - 16 kB of unified instruction memory called UMEM used to store executable code, and 8 kB of data memory called DMEM used for all data sections. The Wakeup M3 processor executes its code entirely from within the UMEM and uses the DMEM for any data. It does not use any external memory or any other external resources. The device address view has the UMEM at address 0x0 and DMEM at address 0x80000, and these are computed automatically within the driver based on relative address calculation from the corresponding device tree IOMEM resources. These device addresses are used to aid the core remoteproc ELF loader code to properly translate and load the firmware segments through the .rproc_da_to_va ops. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
31 lines
937 B
C
31 lines
937 B
C
/*
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* TI Wakeup M3 remote processor platform data
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*
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* Copyright (C) 2014-2015 Texas Instruments, Inc.
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*
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* Dave Gerlach <d-gerlach@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _LINUX_PLATFORM_DATA_WKUP_M3_H
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#define _LINUX_PLATFORM_DATA_WKUP_M3_H
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struct platform_device;
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struct wkup_m3_platform_data {
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const char *reset_name;
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int (*assert_reset)(struct platform_device *pdev, const char *name);
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int (*deassert_reset)(struct platform_device *pdev, const char *name);
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};
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#endif /* _LINUX_PLATFORM_DATA_WKUP_M3_H */
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