[U-Boot] [PATCHv2 4/4] arm: socfpga: stratix10: add environment variables for RSU support

[richard.gong at linux.intel.com]

From: Richard Gong <richard.gong at intel.com>

Add two RSU environment variables:
1. rsu_log_level
        the variable is unsigned integer and its default value is
        RSU_DEBUG (7), which only show log with RSU_INFO,RSU_WARNING and
        RSU_ERR.

        To enable all logs (RSU_ERR, RSU_WARNING, RSU_INFO and RSU_DEBUG),
        you need set log level to 8 or above via “setenv rsu_log_level 8”.

        To disable all logs, you need set log level to 3 or below.

2. rsu_protected_slot
        by default there is no protected RSU slot, you need run
        "setenv rsu_protected_slot <slot_num>” to set a slot protected,
        and “setenv rsu_protected_slot <a space>” to unset a protected
        slot.

Signed-off-by: Richard Gong <richard.gong at intel.com>
---
 arch/arm/mach-socfpga/misc_s10.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/mach-socfpga/misc_s10.c b/arch/arm/mach-socfpga/misc_s10.c
index 0a5fab1..c9a6f00 100644
--- a/arch/arm/mach-socfpga/misc_s10.c
+++ b/arch/arm/mach-socfpga/misc_s10.c
@@ -21,6 +21,8 @@
 
 #include <dt-bindings/reset/altr,rst-mgr-s10.h>
 
+#define RSU_DEFAULT_LOG_LEVEL  7
+
 DECLARE_GLOBAL_DATA_PTR;
 
 static struct socfpga_system_manager *sysmgr_regs =
@@ -136,10 +138,17 @@ int print_cpuinfo(void)
 int arch_misc_init(void)
 {
 	char qspi_string[13];
+	char level[4];
+
+	snprintf(level, sizeof(level), "%u", RSU_DEFAULT_LOG_LEVEL);
 
 	sprintf(qspi_string, "<0x%08x>", cm_get_qspi_controller_clk_hz());
 	env_set("qspi_clock", qspi_string);
 
+	/* setup for RSU */
+	env_set("rsu_protected_slot", "");
+	env_set("rsu_log_level", level);
+
 	socfpga_set_phymode();
 	return 0;
 }
-- 
2.7.4