summaryrefslogtreecommitdiffstats
path: root/drivers/nxp/csu/csu.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 09:13:47 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 09:13:47 +0000
commit102b0d2daa97dae68d3eed54d8fe37a9cc38a892 (patch)
treebcf648efac40ca6139842707f0eba5a4496a6dd2 /drivers/nxp/csu/csu.c
parentInitial commit. (diff)
downloadarm-trusted-firmware-102b0d2daa97dae68d3eed54d8fe37a9cc38a892.tar.xz
arm-trusted-firmware-102b0d2daa97dae68d3eed54d8fe37a9cc38a892.zip
Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/nxp/csu/csu.c')
-rw-r--r--drivers/nxp/csu/csu.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/nxp/csu/csu.c b/drivers/nxp/csu/csu.c
new file mode 100644
index 0000000..9f90fe0
--- /dev/null
+++ b/drivers/nxp/csu/csu.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2020 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#include <endian.h>
+
+#include <common/debug.h>
+#include <csu.h>
+#include <lib/mmio.h>
+
+void enable_layerscape_ns_access(struct csu_ns_dev_st *csu_ns_dev,
+ uint32_t num, uintptr_t nxp_csu_addr)
+{
+ uint32_t *base = (uint32_t *)nxp_csu_addr;
+ uint32_t *reg;
+ uint32_t val;
+ int i;
+
+ for (i = 0; i < num; i++) {
+ reg = base + csu_ns_dev[i].ind / 2U;
+ val = be32toh(mmio_read_32((uintptr_t)reg));
+ if (csu_ns_dev[i].ind % 2U == 0U) {
+ val &= 0x0000ffffU;
+ val |= csu_ns_dev[i].val << 16U;
+ } else {
+ val &= 0xffff0000U;
+ val |= csu_ns_dev[i].val;
+ }
+ mmio_write_32((uintptr_t)reg, htobe32(val));
+ }
+}