[PATCH v6 097/102] x86: apl: Add SPL/TPL init

[Bin Meng]

On Sat, Dec 7, 2019 at 12:54 PM Simon Glass <sjg at chromium.org> wrote:
>
> Add code to init the system both in TPL and SPL. Each phase has its own
> procedure.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
> Changes in v6:
> - Change comment to apl_hostbridge_early_init_pinctrl, not apl_gpio_early_init
> - Change commented-out enable_rtc_upper_bank() call to a TODO
> - Make BOOT_FROM_FAST_SPI_FLASH a Kconfig option
> - Rename init_for_uart() to board_debug_uart_init()
> - Use SZ_4G instead of open-coded shift
>
> Changes in v5: None
> Changes in v4:
> - Switch over to use pinctrl for pad init/config
>
> Changes in v3:
> - Adjust fast_spi_cache_bios_region() to avoid using SPI driver
> - Drop calls to x86_cpu_init_f(), x86_cpu_reinit_f()
> - Fix build error when debug UART is disabled
> - Init the p2sb before the northbridge since the latter so it can use GPIOs
> - Move location of fast_spi.h header file
> - Shorten log_msg_ret() calls since the function name is always printed
> - Support TPL without CONFIG_TPL_SPI_SUPPORT (reduces code size)
>
> Changes in v2: None
>
>  arch/x86/cpu/apollolake/Makefile  |   1 +
>  arch/x86/cpu/apollolake/cpu_spl.c | 271 ++++++++++++++++++++++++++++++
>  2 files changed, 272 insertions(+)
>  create mode 100644 arch/x86/cpu/apollolake/cpu_spl.c
>

Reviewed-by: Bin Meng <bmeng.cn at gmail.com>