[coreboot-gerrit] Change in coreboot[master]: [WIP] soc/amd/common/block/uart: implement read_resource

[Felix Held (Code Review)]

Felix Held has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/58306 )

Change subject: [WIP] soc/amd/common/block/uart: implement read_resource
......................................................................

[WIP] soc/amd/common/block/uart: implement read_resource

Implement the read_resources function for the UART devices so that the
resource allocator knows about their fixed MMIO resources when enabled.

TODO: find out if we need the IORESOURCE_RESERVE flag and run more tests

Signed-off-by: Felix Held 
Change-Id: I4ffddee3f5f4281aca98ddfcefa639dfb7a38dae
---
M src/soc/amd/picasso/uart.c
1 file changed, 11 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/06/58306/1

diff --git a/src/soc/amd/picasso/uart.c b/src/soc/amd/picasso/uart.c
index b8532aa..6a65048 100644
--- a/src/soc/amd/picasso/uart.c
+++ b/src/soc/amd/picasso/uart.c
@@ -103,8 +103,18 @@
    }
 }

+static void uart_read_resources(struct device *dev)
+{
+	struct resource *res;
+
+	res = new_resource(dev, 0);
+	res->base = dev->path.mmio.addr;
+	res->size = 4 * KiB;
+	res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+}
+
 struct device_operations picasso_uart_mmio_ops = {
-	.read_resources = noop_read_resources,
+	.read_resources = uart_read_resources,
    .set_resources = noop_set_resources,
    .scan_bus = scan_static_bus,
    .acpi_name = uart_acpi_name,