include: sbi_utils: Introduce an helper to get fdt base address

This simply adds an helper to get fdt address which is more explicit than
sbi_scratch_thishart_arg1_ptr.

Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

include/sbi_utils/fdt/fdt_helper.h

@@ -11,6 +11,7 @@
 #define __FDT_HELPER_H__
 
 #include <sbi/sbi_types.h>
+#include <sbi/sbi_scratch.h>
 
 struct fdt_match {
 	const char *compatible;
@@ -81,4 +82,9 @@ int fdt_parse_aclint_node(void *fdt, int nodeoffset, bool for_timer,
 int fdt_parse_compat_addr(void *fdt, uint64_t *addr,
 			  const char *compatible);
 
+static inline void *fdt_get_address(void)
+{
+	return sbi_scratch_thishart_arg1_ptr();
+}
+
 #endif /* __FDT_HELPER_H__ */

lib/utils/ipi/fdt_ipi.c

@@ -45,7 +45,7 @@ static int fdt_ipi_cold_init(void)
 	int pos, noff, rc;
 	struct fdt_ipi *drv;
 	const struct fdt_match *match;
-	void *fdt = sbi_scratch_thishart_arg1_ptr();
+	void *fdt = fdt_get_address();
 
 	for (pos = 0; pos < array_size(ipi_drivers); pos++) {
 		drv = ipi_drivers[pos];

lib/utils/irqchip/fdt_irqchip.c

@@ -38,7 +38,7 @@ static int fdt_irqchip_cold_init(void)
 	int pos, noff, rc;
 	struct fdt_irqchip *drv;
 	const struct fdt_match *match;
-	void *fdt = sbi_scratch_thishart_arg1_ptr();
+	void *fdt = fdt_get_address();
 
 	for (pos = 0; pos < array_size(irqchip_drivers); pos++) {
 		drv = irqchip_drivers[pos];

lib/utils/reset/fdt_reset.c

@@ -33,7 +33,7 @@ int fdt_reset_init(void)
 	int pos, noff, rc;
 	struct fdt_reset *drv;
 	const struct fdt_match *match;
-	void *fdt = sbi_scratch_thishart_arg1_ptr();
+	void *fdt = fdt_get_address();
 
 	for (pos = 0; pos < array_size(reset_drivers); pos++) {
 		drv = reset_drivers[pos];

lib/utils/serial/fdt_serial.c

@@ -40,7 +40,7 @@ int fdt_serial_init(void)
 	struct fdt_serial *drv;
 	const struct fdt_match *match;
 	int pos, noff = -1, len, coff, rc;
-	void *fdt = sbi_scratch_thishart_arg1_ptr();
+	void *fdt = fdt_get_address();
 
 	/* Find offset of node pointed to by stdout-path */
 	coff = fdt_path_offset(fdt, "/chosen");

lib/utils/timer/fdt_timer.c

@@ -45,7 +45,7 @@ static int fdt_timer_cold_init(void)
 	int pos, noff, rc;
 	struct fdt_timer *drv;
 	const struct fdt_match *match;
-	void *fdt = sbi_scratch_thishart_arg1_ptr();
+	void *fdt = fdt_get_address();
 
 	for (pos = 0; pos < array_size(timer_drivers); pos++) {
 		drv = timer_drivers[pos];

platform/andes/ae350/platform.c

@@ -15,6 +15,7 @@
 #include <sbi/sbi_ipi.h>
 #include <sbi/sbi_platform.h>
 #include <sbi/sbi_trap.h>
+#include <sbi_utils/fdt/fdt_helper.h>
 #include <sbi_utils/fdt/fdt_fixup.h>
 #include <sbi_utils/irqchip/plic.h>
 #include <sbi_utils/serial/uart8250.h>
@@ -55,7 +56,7 @@ static int ae350_final_init(bool cold_boot)
 	if (!cold_boot)
 		return 0;
 
-	fdt = sbi_scratch_thishart_arg1_ptr();
+	fdt = fdt_get_address();
 	fdt_fixups(fdt);
 
 	return 0;

platform/fpga/ariane/platform.c

@@ -11,6 +11,7 @@
 #include <sbi/sbi_const.h>
 #include <sbi/sbi_hart.h>
 #include <sbi/sbi_platform.h>
+#include <sbi_utils/fdt/fdt_helper.h>
 #include <sbi_utils/fdt/fdt_fixup.h>
 #include <sbi_utils/ipi/aclint_mswi.h>
 #include <sbi_utils/irqchip/plic.h>
@@ -76,7 +77,7 @@ static int ariane_final_init(bool cold_boot)
 	if (!cold_boot)
 		return 0;
 
-	fdt = sbi_scratch_thishart_arg1_ptr();
+	fdt = fdt_get_address();
 	fdt_fixups(fdt);
 
 	return 0;

platform/fpga/openpiton/platform.c

@@ -76,7 +76,7 @@ static int openpiton_early_init(bool cold_boot)
 
 	if (!cold_boot)
 		return 0;
-	fdt = sbi_scratch_thishart_arg1_ptr();
+	fdt = fdt_get_address();
 
 	rc = fdt_parse_uart8250(fdt, &uart_data, "ns16550");
 	if (!rc)
@@ -112,7 +112,7 @@ static int openpiton_final_init(bool cold_boot)
 	if (!cold_boot)
 		return 0;
 
-	fdt = sbi_scratch_thishart_arg1_ptr();
+	fdt = fdt_get_address();
 	fdt_fixups(fdt);
 
 	return 0;

platform/generic/platform.c

@@ -148,7 +148,7 @@ static int generic_final_init(bool cold_boot)
 	if (!cold_boot)
 		return 0;
 
-	fdt = sbi_scratch_thishart_arg1_ptr();
+	fdt = fdt_get_address();
 
 	fdt_cpu_fixup(fdt);
 	fdt_fixups(fdt);
@@ -177,7 +177,7 @@ static void generic_final_exit(void)
 
 static int generic_domains_init(void)
 {
-	return fdt_domains_populate(sbi_scratch_thishart_arg1_ptr());
+	return fdt_domains_populate(fdt_get_address());
 }
 
 static u64 generic_tlbr_flush_limit(void)
@@ -189,7 +189,7 @@ static u64 generic_tlbr_flush_limit(void)
 
 static int generic_pmu_init(void)
 {
-	return fdt_pmu_setup(sbi_scratch_thishart_arg1_ptr());
+	return fdt_pmu_setup(fdt_get_address());
 }
 
 static uint64_t generic_pmu_xlate_to_mhpmevent(uint32_t event_idx,

platform/kendryte/k210/platform.c

@@ -13,6 +13,7 @@
 #include <sbi/sbi_const.h>
 #include <sbi/sbi_platform.h>
 #include <sbi/sbi_system.h>
+#include <sbi_utils/fdt/fdt_helper.h>
 #include <sbi_utils/fdt/fdt_fixup.h>
 #include <sbi_utils/ipi/aclint_mswi.h>
 #include <sbi_utils/irqchip/plic.h>
@@ -120,7 +121,7 @@ static int k210_final_init(bool cold_boot)
 	if (!cold_boot)
 		return 0;
 
-	fdt = sbi_scratch_thishart_arg1_ptr();
+	fdt = fdt_get_address();
 
 	fdt_cpu_fixup(fdt);
 	fdt_fixups(fdt);

platform/nuclei/ux600/platform.c

@@ -16,6 +16,7 @@
 #include <sbi/sbi_const.h>
 #include <sbi/sbi_platform.h>
 #include <sbi/sbi_system.h>
+#include <sbi_utils/fdt/fdt_helper.h>
 #include <sbi_utils/fdt/fdt_fixup.h>
 #include <sbi_utils/ipi/aclint_mswi.h>
 #include <sbi_utils/irqchip/plic.h>
@@ -175,7 +176,7 @@ static int ux600_final_init(bool cold_boot)
 	if (!cold_boot)
 		return 0;
 
-	fdt = sbi_scratch_thishart_arg1_ptr();
+	fdt = fdt_get_address();
 	ux600_modify_dt(fdt);
 
 	return 0;