forked from luck/tmp_suning_uos_patched
8064887e02
This patch allows to build the Kernel for Vybrid (VF6xx) SoC when ARMv7-M CPU is selected. The resulting image runs on the secondary Cortex-M4 core. This core has equally access to all peripherals as the main Cortex-A5 core. However, there is no resource control mechanism, hence when both cores are used simultaneously, orthogonal device tree's are required. The boot CPU is dependent on the SoC variant. The available boards use mostly variants where the Cortex-A5 is the primary and hence the boot CPU. Booting the secondary Cortex-M4 CPU needs SoC specific registers written. There is no in kernel support for this right now, a external userspace utility called "m4boot" can be used to boot the kernel: m4boot xipImage initramfs.cpio.lzo vf610m4-colibri.dtb Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
29 lines
742 B
C
29 lines
742 B
C
/*
|
|
* Copyright 2012-2013 Freescale Semiconductor, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/of_platform.h>
|
|
#include <linux/irqchip.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/hardware/cache-l2x0.h>
|
|
|
|
static const char * const vf610_dt_compat[] __initconst = {
|
|
"fsl,vf500",
|
|
"fsl,vf510",
|
|
"fsl,vf600",
|
|
"fsl,vf610",
|
|
"fsl,vf610m4",
|
|
NULL,
|
|
};
|
|
|
|
DT_MACHINE_START(VYBRID_VF610, "Freescale Vybrid VF5xx/VF6xx (Device Tree)")
|
|
.l2c_aux_val = 0,
|
|
.l2c_aux_mask = ~0,
|
|
.dt_compat = vf610_dt_compat,
|
|
MACHINE_END
|