Get boot hartid from uboot

Ubiquitous/XiZi_AIoT/hardkernel/arch/riscv/rv64gc/preboot_for_jh7110/boot.S

@@ -20,9 +20,11 @@
 
 
 _boot_start:
+	mv s0, a0
 	call _debug_uart_init_early
 	la a0, debug_string_start
 	call _debug_uart_printascii
+	mv a0, s0
 
 	j _start_kernel
 
@@ -42,6 +44,9 @@ clear_bss:
 	blt a3, a4, clear_bss
 clear_bss_done:
 
+	la a2, boot_cpu_hartid
+	sd a0, (a2)
+
 	la sp, stacks_top
 
 	/* Initialize page tables and relocate to virtual addresses */

Ubiquitous/XiZi_AIoT/hardkernel/arch/riscv/rv64gc/preboot_for_jh7110/smp.c

@@ -47,6 +47,8 @@ Modification:
 *************************************************/
 #include <stdint.h>
 
+unsigned long boot_cpu_hartid;
+
 #define PSCI_CPUON 0xc4000003
 struct xizi_smccc_res {
     unsigned long a0;