arm: zynqmp: Wire SPL/ATF handoff structure properly

handoff_setup() was used to generate fixed handoff structure for ATF on
ZynqMP platform.
Switching to bl2_plat_get_bl31_params() platform brings more flexibility
because information can be taken from fit image where /fit-images node is
created at run time.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

arch/arm/mach-zynqmp/handoff.c

@@ -66,7 +66,9 @@ struct xfsbl_atf_handoff_params {
 };
 
 #ifdef CONFIG_SPL_OS_BOOT
-void handoff_setup(void)
+struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
+					     uintptr_t bl33_entry,
+					     uintptr_t fdt_addr)
 {
 	struct xfsbl_atf_handoff_params *atfhandoffparams;
 
@@ -76,11 +78,16 @@ void handoff_setup(void)
 	atfhandoffparams->magic[2] = 'N';
 	atfhandoffparams->magic[3] = 'X';
 
-	atfhandoffparams->num_entries = 1;
-	atfhandoffparams->partition[0].entry_point = CONFIG_SYS_TEXT_BASE;
-	atfhandoffparams->partition[0].flags = FSBL_FLAGS_EL2 <<
-					       FSBL_FLAGS_EL_SHIFT;
+	atfhandoffparams->num_entries = 0;
+	if (bl33_entry) {
+		atfhandoffparams->partition[0].entry_point = bl33_entry;
+		atfhandoffparams->partition[0].flags = FSBL_FLAGS_EL2 <<
+						       FSBL_FLAGS_EL_SHIFT;
+		atfhandoffparams->num_entries++;
+	}
 
 	writel(CONFIG_SPL_TEXT_BASE, &pmu_base->gen_storage6);
+
+	return NULL;
 }
 #endif

arch/arm/mach-zynqmp/include/mach/sys_proto.h

@@ -46,8 +46,6 @@ struct zynqmp_ipi_msg {
 int zynq_board_read_rom_ethaddr(unsigned char *ethaddr);
 unsigned int zynqmp_get_silicon_version(void);
 
-void handoff_setup(void);
-
 int zynqmp_mmio_write(const u32 address, const u32 mask, const u32 value);
 int zynqmp_mmio_read(const u32 address, u32 *value);
 

arch/arm/mach-zynqmp/spl.c

@@ -120,8 +120,6 @@ u32 spl_boot_device(void)
 #ifdef CONFIG_SPL_OS_BOOT
 int spl_start_uboot(void)
 {
-	handoff_setup();
-
 	return 0;
 }
 #endif