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lib: sbi: Add sbi_ngets() function

We add new sbi_ngets() which help us read characters into a
physical memory location.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Anup Patel 1 jaar geleden
bovenliggende
commit
4e0572f57b
2 gewijzigde bestanden met toevoegingen van 17 en 0 verwijderingen
  1. 2 0
      include/sbi/sbi_console.h
  2. 15 0
      lib/sbi/sbi_console.c

+ 2 - 0
include/sbi/sbi_console.h

@@ -37,6 +37,8 @@ unsigned long sbi_nputs(const char *str, unsigned long len);
 
 void sbi_gets(char *s, int maxwidth, char endchar);
 
+unsigned long sbi_ngets(char *str, unsigned long len);
+
 int __printf(2, 3) sbi_sprintf(char *out, const char *format, ...);
 
 int __printf(3, 4) sbi_snprintf(char *out, u32 out_sz, const char *format, ...);

+ 15 - 0
lib/sbi/sbi_console.c

@@ -76,6 +76,21 @@ void sbi_gets(char *s, int maxwidth, char endchar)
 	*retval = '\0';
 }
 
+unsigned long sbi_ngets(char *str, unsigned long len)
+{
+	int ch;
+	unsigned long i;
+
+	for (i = 0; i < len; i++) {
+		ch = sbi_getc();
+		if (ch < 0)
+			break;
+		str[i] = ch;
+	}
+
+	return i;
+}
+
 #define PAD_RIGHT 1
 #define PAD_ZERO 2
 #define PAD_ALTERNATE 4