Hi Prabhakar, Thanks for your feedback!
> -----Original Message----- > From: Prabhakar Kushwaha > Sent: 2016年1月19日 22:07 > To: Zhiqiang Hou <zhiqiang....@freescale.com>; u-boot@lists.denx.de; > albert.u.b...@aribaud.net; mingkai...@freescale.com; york...@freescale.com > Cc: le...@freescale.com; prabha...@freescale.com; > bhupesh.sha...@freescale.com; s...@chromium.org; bmeng...@gmail.com; > h...@denx.de; joe.hershber...@ni.com; ma...@denx.de; Zhiqiang Hou > <zhiqiang....@nxp.com>; Hou Zhiqiang <b48...@freescale.com> > Subject: RE: [PATCH 2/3] ARMv8/layerscape: Add FSL PPA support > > > -----Original Message----- > > From: Zhiqiang Hou [mailto:zhiqiang....@freescale.com] > > Sent: Tuesday, January 19, 2016 6:10 PM > > To: u-boot@lists.denx.de; albert.u.b...@aribaud.net; > > mingkai...@freescale.com; york...@freescale.com > > Cc: le...@freescale.com; prabha...@freescale.com; > > bhupesh.sha...@freescale.com; s...@chromium.org; bmeng...@gmail.com; > > h...@denx.de; joe.hershber...@ni.com; ma...@denx.de; Zhiqiang Hou > > <zhiqiang....@nxp.com>; Hou Zhiqiang <b48...@freescale.com> > > Subject: [PATCH 2/3] ARMv8/layerscape: Add FSL PPA support > > > > From: Hou Zhiqiang <b48...@freescale.com> > > > > The FSL Primary Protected Application (PPA) is a software component > > loaded during boot which runs in TrustZone and remains resident after boot. > > > > Signed-off-by: Hou Zhiqiang <b48...@freescale.com> > > --- > > arch/arm/cpu/armv8/fsl-layerscape/Makefile | 1 + > > arch/arm/cpu/armv8/fsl-layerscape/ppa.c | 196 > > +++++++++++++++++++++++++ > > arch/arm/cpu/armv8/fsl-layerscape/ppa_entry.S | 37 +++++ > > arch/arm/include/asm/arch-fsl-layerscape/ppa.h | 15 ++ > > 4 files changed, 249 insertions(+) > > create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/ppa.c > > create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/ppa_entry.S > > create mode 100644 arch/arm/include/asm/arch-fsl-layerscape/ppa.h > > > > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile > > b/arch/arm/cpu/armv8/fsl-layerscape/Makefile > > index cce7405..27bfeb1 100644 > > --- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile > > +++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile > > @@ -10,6 +10,7 @@ obj-y += soc.o > > obj-$(CONFIG_MP) += mp.o > > obj-$(CONFIG_OF_LIBFDT) += fdt.o > > obj-$(CONFIG_SPL) += spl.o > > +obj-$(CONFIG_FSL_LS_PPA) += ppa.o ppa_entry.o > > > > ifneq ($(CONFIG_FSL_LSCH3),) > > obj-y += fsl_lsch3_speed.o > > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ppa.c > > b/arch/arm/cpu/armv8/fsl-layerscape/ppa.c > > new file mode 100644 > > index 0000000..15e4f8b > > --- /dev/null > > +++ b/arch/arm/cpu/armv8/fsl-layerscape/ppa.c > > @@ -0,0 +1,196 @@ > > +/* > > + * Copyright 2015 Freescale Semiconductor, Inc. > > + * > > + * SPDX-License-Identifier: GPL-2.0+ > > + */ > > +#include <common.h> > > +#include <config.h> > > +#include <errno.h> > > +#include <malloc.h> > > +#include <asm/system.h> > > +#include <asm/io.h> > > +#include <asm/types.h> > > +#include <asm/macro.h> > > +#include <asm/arch/soc.h> > > +#include <asm/arch/immap_lsch2.h> > > +#include <asm/arch/ppa.h> > > + > > +DECLARE_GLOBAL_DATA_PTR; > > + > > +extern void c_runtime_cpu_setup(void); > > + > > +#define LS_PPA_FIT_FIRMWARE_IMAGE "firmware" > > +#define LS_PPA_FIT_CNF_NAME "config@1" > > +#define PPA_MEM_SIZE_ENV_VAR "ppamemsize" > > + > > +/* > > > <snip> > > > +#include <config.h> > > +#include <linux/linkage.h> > > +#include <asm/system.h> > > +#include <asm/macro.h> > > + > > +ADDR_BASE_SCFG: > > + .long 0x01570000 > > If I am correct it is address of BOOLPTR. This address looks to be specific to > LS1043. > For other SoC it may change > Yes, I will make it a common interface for ARMv8 Layerscape platform in next version. > > > + > > +ENTRY(ppa_init) > > +/* Save stack pointer for EL2 */ > > + mov x1, sp > > + msr sp_el2, x1 > > + > > +/* Set boot loc pointer */ > > + adr x4, 1f > > + adr x1, ADDR_BASE_SCFG > > + ldr w2, [x1] > > + mov x1, x4 > > + rev w3, w1 > > + str w3, [x2, #0x604] > > It is LS1043 specific > > > > + lsr x1, x4, #32 > > + rev w3, w1 > > + str w3, [x2, #0x600] > Same as above > Thanks, Zhiqiang _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot