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espi: Add support for debug helper to print slave capabilities

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This change adds a Kconfig option to enable eSPI debugging that pulls
in a helper function to print slave capabilities.

BUG=b:153675913

Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: I8ff250fe85dfa9370bf93ce3c7e2de5c069bf9e9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41254
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Furquan Shaikh 2020-05-11 12:11:27 -07:00
commit 5cc41f2a6b
4 changed files with 111 additions and 0 deletions
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6
src/include/espi.h
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@ -229,6 +229,12 @@
#define ESPI_VW_SIGNAL_HIGH(x) (ESPI_VW_VALID(x) | ESPI_VW_VALUE(1, x))
#define ESPI_VW_SIGNAL_LOW(x) (ESPI_VW_VALID(x) | ESPI_VW_VALUE(0, x))
#if CONFIG(ESPI_DEBUG)
void espi_show_slave_general_configuration(uint32_t config);
#else
static void espi_show_slave_general_configuration(uint32_t config) {}
#endif
static inline bool espi_slave_supports_quad_io(uint32_t gen_caps)
{
uint32_t mode = gen_caps & ESPI_SLAVE_IO_MODE_SUPP_MASK;