On 5 August 2016 at 17:00, Max Filippov <jcmvb...@gmail.com> wrote:
> From: Chris Zankel <ch...@zankel.net>
>
> The Xtensa processor architecture is a configurable, extensible,
> and synthesizable 32-bit RISC processor core provided by Tensilica, inc.
>
> This is the second part of the basic architecture port, adding the
> 'arch/xtensa' directory and a readme file.
>
> Signed-off-by: Chris Zankel <ch...@zankel.net>
> Signed-off-by: Max Filippov <jcmvb...@gmail.com>
> ---
> Changes v2->v3:
> - fix comment wording and stylistic issues;
> - drop {HAVE,SYS}_GENERIC_BOARD from Kconfig;
> - drop ASCDISP, display_printf and include/asm/xtensa.h;
> - drop 10 second delay in unhandled_exception;
> - don's silence invalid memory access, report and panic;
> - move bss clearing to c code;
> - drop custom do_reset implementation;
> ---
> arch/Kconfig | 6 +
> arch/xtensa/Kconfig | 18 +
> arch/xtensa/Makefile | 8 +
> arch/xtensa/config.mk | 12 +
> arch/xtensa/cpu/Makefile | 9 +
> arch/xtensa/cpu/cpu.c | 50 +++
> arch/xtensa/cpu/exceptions.c | 48 +++
> arch/xtensa/cpu/start.S | 677
> ++++++++++++++++++++++++++++++++++
> arch/xtensa/cpu/u-boot.lds | 116 ++++++
> arch/xtensa/dts/Makefile | 13 +
> arch/xtensa/dts/include/dt-bindings | 1 +
> arch/xtensa/include/asm/addrspace.h | 31 ++
> arch/xtensa/include/asm/asmmacro.h | 152 ++++++++
> arch/xtensa/include/asm/atomic.h | 55 +++
> arch/xtensa/include/asm/bitops.h | 36 ++
> arch/xtensa/include/asm/bootparam.h | 54 +++
> arch/xtensa/include/asm/byteorder.h | 83 +++++
> arch/xtensa/include/asm/cache.h | 25 ++
> arch/xtensa/include/asm/cacheasm.h | 211 +++++++++++
> arch/xtensa/include/asm/config.h | 24 ++
> arch/xtensa/include/asm/errno.h | 1 +
> arch/xtensa/include/asm/global_data.h | 20 +
> arch/xtensa/include/asm/io.h | 148 ++++++++
> arch/xtensa/include/asm/ldscript.h | 222 +++++++++++
> arch/xtensa/include/asm/linkage.h | 4 +
> arch/xtensa/include/asm/misc.h | 20 +
> arch/xtensa/include/asm/posix_types.h | 74 ++++
> arch/xtensa/include/asm/processor.h | 11 +
> arch/xtensa/include/asm/ptrace.h | 133 +++++++
> arch/xtensa/include/asm/regs.h | 95 +++++
> arch/xtensa/include/asm/relocate.h | 14 +
> arch/xtensa/include/asm/sections.h | 12 +
> arch/xtensa/include/asm/string.h | 10 +
> arch/xtensa/include/asm/system.h | 27 ++
> arch/xtensa/include/asm/types.h | 60 +++
> arch/xtensa/include/asm/u-boot.h | 41 ++
> arch/xtensa/include/asm/unaligned.h | 6 +
> arch/xtensa/lib/Makefile | 10 +
> arch/xtensa/lib/bootm.c | 197 ++++++++++
> arch/xtensa/lib/cache.c | 60 +++
> arch/xtensa/lib/misc.S | 179 +++++++++
> arch/xtensa/lib/relocate.c | 18 +
> arch/xtensa/lib/time.c | 121 ++++++
> 43 files changed, 3112 insertions(+)
> create mode 100644 arch/xtensa/Kconfig
> create mode 100644 arch/xtensa/Makefile
> create mode 100644 arch/xtensa/config.mk
> create mode 100644 arch/xtensa/cpu/Makefile
> create mode 100644 arch/xtensa/cpu/cpu.c
> create mode 100644 arch/xtensa/cpu/exceptions.c
> create mode 100644 arch/xtensa/cpu/start.S
> create mode 100644 arch/xtensa/cpu/u-boot.lds
> create mode 100644 arch/xtensa/dts/Makefile
> create mode 120000 arch/xtensa/dts/include/dt-bindings
> create mode 100644 arch/xtensa/include/asm/addrspace.h
> create mode 100644 arch/xtensa/include/asm/asmmacro.h
> create mode 100644 arch/xtensa/include/asm/atomic.h
> create mode 100644 arch/xtensa/include/asm/bitops.h
> create mode 100644 arch/xtensa/include/asm/bootparam.h
> create mode 100644 arch/xtensa/include/asm/byteorder.h
> create mode 100644 arch/xtensa/include/asm/cache.h
> create mode 100644 arch/xtensa/include/asm/cacheasm.h
> create mode 100644 arch/xtensa/include/asm/config.h
> create mode 100644 arch/xtensa/include/asm/errno.h
> create mode 100644 arch/xtensa/include/asm/global_data.h
> create mode 100644 arch/xtensa/include/asm/io.h
> create mode 100644 arch/xtensa/include/asm/ldscript.h
> create mode 100644 arch/xtensa/include/asm/linkage.h
> create mode 100644 arch/xtensa/include/asm/misc.h
> create mode 100644 arch/xtensa/include/asm/posix_types.h
> create mode 100644 arch/xtensa/include/asm/processor.h
> create mode 100644 arch/xtensa/include/asm/ptrace.h
> create mode 100644 arch/xtensa/include/asm/regs.h
> create mode 100644 arch/xtensa/include/asm/relocate.h
> create mode 100644 arch/xtensa/include/asm/sections.h
> create mode 100644 arch/xtensa/include/asm/string.h
> create mode 100644 arch/xtensa/include/asm/system.h
> create mode 100644 arch/xtensa/include/asm/types.h
> create mode 100644 arch/xtensa/include/asm/u-boot.h
> create mode 100644 arch/xtensa/include/asm/unaligned.h
> create mode 100644 arch/xtensa/lib/Makefile
> create mode 100644 arch/xtensa/lib/bootm.c
> create mode 100644 arch/xtensa/lib/cache.c
> create mode 100644 arch/xtensa/lib/misc.S
> create mode 100644 arch/xtensa/lib/relocate.c
> create mode 100644 arch/xtensa/lib/time.c
Reviewed-by: Simon Glass <s...@chromium.org>
nit: For gd, you can use __attribute__((section(".data")))
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