drivers: introduce Secure Monitor uclass
At the moment, we don't have a common API for working with
SM, only the smc_call() function. This approach is not generic
and difficult to configure and maintain.
This patch adds UCLASS_SM with the generic API:
- sm_call()
- sm_call_write()
- sm_call_read()
These functions operate with struct pt_regs, which describes
Secure Monitor arguments.
Signed-off-by: Alexey Romanov <avromanov@salutedevices.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/r/20230921081346.22157-2-avromanov@salutedevices.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index 0432c95..d2c5288 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -89,6 +89,7 @@
UCLASS_MDIO, /* MDIO bus */
UCLASS_MDIO_MUX, /* MDIO MUX/switch */
UCLASS_MEMORY, /* Memory Controller device */
+ UCLASS_SM, /* Secure Monitor driver */
UCLASS_MISC, /* Miscellaneous device */
UCLASS_MMC, /* SD / MMC card or chip */
UCLASS_MOD_EXP, /* RSA Mod Exp device */