u-boot.git/drivers/firmware/scmi, branch v2022.04

firmware: scmi: Add OP-TEE transport

2021-11-23T18:54:43Z

This change implements an SCMI transport for agent interfacing the OP-TEE SCMI service. OP-TEE provides an SCMI PTA (Pseudo-TA) for non-secure world to send SCMI messages over an identified channel. The driver implemented here uses a SMT shared memory for passing messages between client and server. The implementation opens and releases channel resources for each passed SCMI message so that resources allocated (sessions) or registered (shared memory areas) in OP-TEE firmware are released for example before relocation as the driver will likely allocate/register them back when probed after relocation. The integration of the driver using dedicated config switch CONFIG_SCMI_AGENT_OPTEE is designed on the model posted to the U-Boot ML by Patrick Delaunay [1]. Link: [1] https://lore.kernel.org/all/20211028191222.v3.4.Ib2e58ee67f4d023823d8b5404332dc4d7e847277@changeid/ Cc: Patrick Delaunay Cc: Wolfgang Denk Signed-off-by: Etienne Carriere Reviewed-by: Patrick Delaunay

firmware: scmi: smccc transport: simplify probe sequence

2021-11-23T18:53:03Z

Minor simplification in scmi_smccc_probe() exit sequence. Cc: Simon Glass Cc: Patrice Chotard Cc: Patrick Delaunay Signed-off-by: Etienne Carriere Reviewed-by: Patrick Delaunay

firmware: scmi: smccc transport: use plat data, not priv data

2021-11-23T18:53:03Z

Change SCMI smccc transport drivers to use platform data rather than private data for channel reference since it only stores platform data retrieved from the DT. Consequently the probe handler is replaced with a of_to_plat handler. Cc: Simon Glass Cc: Patrice Chotard Cc: Patrick Delaunay Signed-off-by: Etienne Carriere Reviewed-by: Patrick Delaunay

firmware: scmi: mailbox transport: use plat data, not priv data

2021-11-23T18:53:03Z

Change SCMI mailbox transport drivers to use platform data rather than private data for channel reference since it only stores platform data retrieved from the DT. Consequently the probe handler is replaced with a of_to_plat handler. Cc: Simon Glass Cc: Patrice Chotard Cc: Patrick Delaunay Signed-off-by: Etienne Carriere Reviewed-by: Patrick Delaunay

firmware: scmi: mailbox transport: fix probe failure implementation

2021-11-23T18:53:03Z

Correct scmi mailbox probe function that can't free the scmi channel instance since its auto-allocated by the device model framework. Cc: Simon Glass Cc: Patrice Chotard Cc: Patrick Delaunay Signed-off-by: Etienne Carriere Reviewed-by: Patrick Delaunay

firmware: scmi: add configs to select the supported agents

2021-11-23T18:53:03Z

Add two configs CONFIG_SCMI_AGENT_MAILBOX and CONFIG_SCMI_AGENT_SMCCC to select the supported agents as all the agents are not supported. Signed-off-by: Patrick Delaunay Acked-by: Etienne Carriere

WS cleanup: remove SPACE(s) followed by TAB

2021-09-30T13:08:16Z

Signed-off-by: Wolfgang Denk

dm: core: Add address translation in fdt_get_resource

2021-04-29T10:23:39Z

Today of_address_to_resource() is called only in ofnode_read_resource() for livetree support and fdt_get_resource() is called when livetree is not supported. The fdt_get_resource() doesn't do the address translation so when it is required, but the address translation is done by ofnode_read_resource() caller, for example in drivers/firmware/scmi/smt.c::scmi_dt_get_smt_buffer() { ... ret = ofnode_read_resource(args.node, 0, &resource); if (ret) return ret; faddr = cpu_to_fdt32(resource.start); paddr = ofnode_translate_address(args.node, &faddr); ... The both behavior should be aligned and the address translation must be called in fdt_get_resource() and removed for each caller. Fixes: a44810123f9e ("dm: core: Add dev_read_resource() to read device resources") Signed-off-by: Patrick Delaunay Acked-by: Etienne Carriere

scmi: translate the resource only when livetree is not activated

2021-04-12T21:45:40Z

Call the translation function on the ofnode_read_resource result only when the livetree is not activated. Today of_address_to_resource() calls ofnode_read_resource() for livetree support and fdt_get_resource() when livetree is not supported. The fdt_get_resource() doesn't do the address translation so when it is required when livetree is activated but this address translation is already done by ofnode_read_resource(). Fixes: 240720e9052f ("firmware: scmi: mailbox/smt agent device") Signed-off-by: Patrick Delaunay

scmi: correctly configure MMU for SCMI buffer

2021-04-12T21:44:55Z

Align the MMU area for SCMI shared buffer on section size; use the ALIGN macro in mmu_set_region_dcache_behaviour call. Since commit d877f8fd0f09 ("arm: provide a function for boards init code to modify MMU virtual-physical map") the parameter of mmu_set_region_dcache_behaviour need to be MMU_SECTION_SIZE aligned. Fixes: 240720e9052f ("firmware: scmi: mailbox/smt agent device") Signed-off-by: Patrick Delaunay Reviewed-by: Etienne Carriere