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u-boot/arch/arm/cpu/armv7/Makefile

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OMAP3: Add common cpu and start code Add common cpu and start code. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
2008-12-14 08:47:13 +00:00
#
# (C) Copyright 2000-2003
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
Add GPL-2.0+ SPDX-License-Identifier to source files Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-07-08 07:37:19 +00:00
# SPDX-License-Identifier: GPL-2.0+
OMAP3: Add common cpu and start code Add common cpu and start code. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
2008-12-14 08:47:13 +00:00
#
include $(TOPDIR)/config.mk
Switch from archive libraries to partial linking Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
2010-11-05 14:48:07 +00:00
LIB = $(obj)lib$(CPU).o
OMAP3: Add common cpu and start code Add common cpu and start code. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
2008-12-14 08:47:13 +00:00
START := start.o
omap: add basic SPL support - Provide alternate implementations of board_init_f() board_init_r() for OMAP spl. - Provide linker script - Initialize global data - Add serial console support - Update CONFIG_SYS_TEXT_BASE to allow for SPL's bss and move it to board config header from config.mk Signed-off-by: Aneesh V <aneesh@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-07-21 13:10:21 +00:00
COBJS += cache_v7.o
armv7: include armv7/cpu.c in SPL build This allows SPL to have default implementation of save_boot_params(), useful for SoCs that do not intend to override this default implementation Cc: Albert Aribaud <albert.u.boot@aribaud.net> Signed-off-by: Aneesh V <aneesh@ti.com>
2011-11-21 23:33:59 +00:00
COBJS += cpu.o
COBJS += syslib.o
OMAP3: Add common cpu and start code Add common cpu and start code. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
2008-12-14 08:47:13 +00:00
Prepare for TI816X : reuse existing code from TI814X Rename some CONFIG_TI814X to a more generic CONFIG_TI81XX Signed-off-by: Antoine Tenart <atenart@adeneo-embedded.com> [trini: Adapt for CONFIG_OMAP_COMMON changes, AM43XX] Signed-off-by: Tom Rini <trini@ti.com>
2013-07-02 10:05:58 +00:00
ifneq ($(CONFIG_AM43XX)$(CONFIG_AM33XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TEGRA)$(CONFIG_MX6)$(CONFIG_TI81XX),)
omap4/5/am33xx: Make lowlevel_init available to all armv7 platforms Make the lowlevel_init function that these platforms have which just sets up the stack and calls a C function available to all armv7 platforms. As part of this we change some of the macros that are used to be more clear. Previously (except for am335x evm) we had been setting CONFIG_SYS_INIT_SP_ADDR to a series of new defines that are equivalent to simply referencing NON_SECURE_SRAM_END. On am335x evm we should have been doing this initially and do now. Cc: Sricharan R <r.sricharan@ti.com> Tested-by: Allen Martin <amartin@nvidia.com> Signed-off-by: Tom Rini <trini@ti.com>
2012-08-09 00:03:10 +00:00
SOBJS += lowlevel_init.o
endif
ARM: extend non-secure switch to also go into HYP mode For the KVM and XEN hypervisors to be usable, we need to enter the kernel in HYP mode. Now that we already are in non-secure state, HYP mode switching is within short reach. While doing the non-secure switch, we have to enable the HVC instruction and setup the HYP mode HVBAR (while still secure). The actual switch is done by dropping back from a HYP mode handler without actually leaving HYP mode, so we introduce a new handler routine in our new secure exception vector table. In the assembly switching routine we save and restore the banked LR and SP registers around the hypercall to do the actual HYP mode switch. The C routine first checks whether we are in HYP mode already and also whether the virtualization extensions are available. It also checks whether the HYP mode switch was finally successful. The bootm command part only calls the new function after the non-secure switch. Signed-off-by: Andre Przywara <andre.przywara@linaro.org>
2013-09-19 16:06:45 +00:00
ifneq ($(CONFIG_ARMV7_NONSEC)$(CONFIG_ARMV7_VIRT),)
ARM: add secure monitor handler to switch to non-secure state A prerequisite for using virtualization is to be in HYP mode, which requires the CPU to be in non-secure state first. Add a new file in arch/arm/cpu/armv7 to hold a monitor handler routine which switches the CPU to non-secure state by setting the NS and associated bits. According to the ARM architecture reference manual this should not be done in SVC mode, so we have to setup a SMC handler for this. We create a new vector table to avoid interference with other boards. The MVBAR register will be programmed later just before the smc call. Signed-off-by: Andre Przywara <andre.przywara@linaro.org>
2013-09-19 16:06:40 +00:00
SOBJS += nonsec_virt.o
ARM: add C function to switch to non-secure state The core specific part of the work is done in the assembly routine in nonsec_virt.S, introduced with the previous patch, but for the full glory we need to setup the GIC distributor interface once for the whole system, which is done in C here. The routine is placed in arch/arm/cpu/armv7 to allow easy access from other ARMv7 boards. We check the availability of the security extensions first. Since we need a safe way to access the GIC, we use the PERIPHBASE registers on Cortex-A15 and A7 CPUs and do some sanity checks. Boards not implementing the CBAR can override this value via a configuration file variable. Then we actually do the GIC enablement: a) enable the GIC distributor, both for non-secure and secure state (GICD_CTLR[1:0] = 11b) b) allow all interrupts to be handled from non-secure state (GICD_IGROUPRn = 0xFFFFFFFF) The core specific GIC setup is then done in the assembly routine. Signed-off-by: Andre Przywara <andre.przywara@linaro.org>
2013-09-19 16:06:42 +00:00
COBJS += virt-v7.o
ARM: add secure monitor handler to switch to non-secure state A prerequisite for using virtualization is to be in HYP mode, which requires the CPU to be in non-secure state first. Add a new file in arch/arm/cpu/armv7 to hold a monitor handler routine which switches the CPU to non-secure state by setting the NS and associated bits. According to the ARM architecture reference manual this should not be done in SVC mode, so we have to setup a SMC handler for this. We create a new vector table to avoid interference with other boards. The MVBAR register will be programmed later just before the smc call. Signed-off-by: Andre Przywara <andre.przywara@linaro.org>
2013-09-19 16:06:40 +00:00
endif
OMAP3: Add common cpu and start code Add common cpu and start code. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
2008-12-14 08:47:13 +00:00
SRCS := $(START:.o=.S) $(COBJS:.o=.c)
omap4/5/am33xx: Make lowlevel_init available to all armv7 platforms Make the lowlevel_init function that these platforms have which just sets up the stack and calls a C function available to all armv7 platforms. As part of this we change some of the macros that are used to be more clear. Previously (except for am335x evm) we had been setting CONFIG_SYS_INIT_SP_ADDR to a series of new defines that are equivalent to simply referencing NON_SECURE_SRAM_END. On am335x evm we should have been doing this initially and do now. Cc: Sricharan R <r.sricharan@ti.com> Tested-by: Allen Martin <amartin@nvidia.com> Signed-off-by: Tom Rini <trini@ti.com>
2012-08-09 00:03:10 +00:00
OBJS := $(addprefix $(obj),$(COBJS) $(SOBJS))
OMAP3: Add common cpu and start code Add common cpu and start code. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
2008-12-14 08:47:13 +00:00
START := $(addprefix $(obj),$(START))
all: $(obj).depend $(START) $(LIB)
$(LIB): $(OBJS)
Switch from archive libraries to partial linking Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
2010-11-05 14:48:07 +00:00
$(call cmd_link_o_target, $(OBJS))
OMAP3: Add common cpu and start code Add common cpu and start code. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
2008-12-14 08:47:13 +00:00
#########################################################################
# defines $(obj).depend target
include $(SRCTREE)/rules.mk
sinclude $(obj).depend
ARM: Use syslib functions for all CORTEXA8 The OMAP3 cpu directory contains a syslib file with some utilities that can be shared by all targets using arm cortexa8 processors, not only OMAP. Signed-off-by: Stefano Babic <sbabic@denx.de>
2010-07-26 08:05:05 +00:00
#########################################################################