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dm: core: ofnode: Add ofnode_read_bootscript_address()
ofnode_read_bootscript_address() reads bootscript address from /options/u-boot DT node. bootscr-address or bootscr-ram-offset properties are read and values are filled. bootscr-address has higher priority than bootscr-ram-offset and the only one should be described in DT. Also add test to cover this new function. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/23be3838502efef61803c90ef6e8b32bbd6ede41.1693465140.git.michal.simek@amd.com
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4 changed files with 72 additions and 0 deletions
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@ -81,6 +81,13 @@
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};
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};
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options {
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u-boot {
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compatible = "u-boot,config";
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bootscr-ram-offset = /bits/ 64 <0x12345678>;
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};
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};
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bootstd {
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bootph-verify;
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compatible = "u-boot,boot-std";
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@ -1593,6 +1593,31 @@ const char *ofnode_conf_read_str(const char *prop_name)
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return ofnode_read_string(node, prop_name);
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}
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int ofnode_read_bootscript_address(u64 *bootscr_address, u64 *bootscr_offset)
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{
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int ret;
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ofnode uboot;
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*bootscr_address = 0;
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*bootscr_offset = 0;
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uboot = ofnode_path("/options/u-boot");
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if (!ofnode_valid(uboot)) {
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printf("%s: Missing /u-boot node\n", __func__);
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return -EINVAL;
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}
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ret = ofnode_read_u64(uboot, "bootscr-address", bootscr_address);
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if (ret) {
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ret = ofnode_read_u64(uboot, "bootscr-ram-offset",
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bootscr_offset);
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if (ret)
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return -EINVAL;
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}
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return 0;
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}
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ofnode ofnode_get_phy_node(ofnode node)
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{
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/* DT node properties that reference a PHY node */
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@ -20,6 +20,7 @@
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struct resource;
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#include <dm/ofnode_decl.h>
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#include <linux/errno.h>
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struct ofnode_phandle_args {
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ofnode node;
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@ -1512,6 +1513,26 @@ int ofnode_conf_read_int(const char *prop_name, int default_val);
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*/
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const char *ofnode_conf_read_str(const char *prop_name);
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/**
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* ofnode_read_bootscript_address() - Read bootscr-address or bootscr-ram-offset
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*
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* @bootscr_address: pointer to 64bit address where bootscr-address property value
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* is stored
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* @bootscr_offset: pointer to 64bit offset address where bootscr-ram-offset
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* property value is stored
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*
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* This reads a bootscr-address or bootscr-ram-offset property from
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* the /options/u-boot/ node of the devicetree. bootscr-address holds the full
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* address of the boot script file. bootscr-ram-offset holds the boot script
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* file offset from the start of the ram base address. When bootscr-address is
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* defined, bootscr-ram-offset property is ignored.
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*
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* This only works with the control FDT.
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*
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* Return: 0 if OK, -EINVAL if property is not found.
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*/
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int ofnode_read_bootscript_address(u64 *bootscr_address, u64 *bootscr_offset);
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#else /* CONFIG_DM */
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static inline bool ofnode_conf_read_bool(const char *prop_name)
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{
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@ -1528,6 +1549,11 @@ static inline const char *ofnode_conf_read_str(const char *prop_name)
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return NULL;
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}
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static inline int ofnode_read_bootscript_address(u64 *bootscr_address, u64 *bootscr_offset)
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{
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return -EINVAL;
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}
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#endif /* CONFIG_DM */
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/**
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@ -583,6 +583,20 @@ static int dm_test_ofnode_conf(struct unit_test_state *uts)
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}
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DM_TEST(dm_test_ofnode_conf, 0);
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static int dm_test_ofnode_options(struct unit_test_state *uts)
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{
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u64 bootscr_address;
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u64 bootscr_offset;
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ut_assertok(ofnode_read_bootscript_address(&bootscr_address,
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&bootscr_offset));
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ut_asserteq_64(0, bootscr_address);
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ut_asserteq_64(0x12345678, bootscr_offset);
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return 0;
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}
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DM_TEST(dm_test_ofnode_options, 0);
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static int dm_test_ofnode_for_each_compatible_node(struct unit_test_state *uts)
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{
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const char compatible[] = "denx,u-boot-fdt-test";
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