diff options
| -rw-r--r-- | README | 7 | ||||
| -rw-r--r-- | drivers/serial/ns16550.c | 4 | ||||
| -rw-r--r-- | include/configs/SIMPC8313.h | 3 |
3 files changed, 14 insertions, 0 deletions
@@ -2458,6 +2458,13 @@ use the "saveenv" command to store a valid environment. - CONFIG_SYS_64BIT_STRTOUL: Adds simple_strtoull that returns a 64bit value +- CONFIG_NS16550_MIN_FUNCTIONS: + Define this if you desire to only have use of the NS16550_init + and NS16550_putc functions for the serial driver located at + drivers/serial/ns16550.c. This option is useful for saving + space for already greatly restricted images, including but not + limited to NAND_SPL configurations. + Low Level (hardware related) configuration options: --------------------------------------------------- diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c index 93c2243d7d..1b347e91ad 100644 --- a/drivers/serial/ns16550.c +++ b/drivers/serial/ns16550.c @@ -39,6 +39,7 @@ void NS16550_init (NS16550_t com_port, int baud_divisor) #endif } +#ifndef CONFIG_NS16550_MIN_FUNCTIONS void NS16550_reinit (NS16550_t com_port, int baud_divisor) { com_port->ier = 0x00; @@ -53,6 +54,7 @@ void NS16550_reinit (NS16550_t com_port, int baud_divisor) com_port->dlm = (baud_divisor >> 8) & 0xff; com_port->lcr = LCRVAL; } +#endif /* CONFIG_NS16550_MIN_FUNCTIONS */ void NS16550_putc (NS16550_t com_port, char c) { @@ -60,6 +62,7 @@ void NS16550_putc (NS16550_t com_port, char c) com_port->thr = c; } +#ifndef CONFIG_NS16550_MIN_FUNCTIONS char NS16550_getc (NS16550_t com_port) { while ((com_port->lsr & LSR_DR) == 0) { @@ -76,4 +79,5 @@ int NS16550_tstc (NS16550_t com_port) return ((com_port->lsr & LSR_DR) != 0); } +#endif /* CONFIG_NS16550_MIN_FUNCTIONS */ #endif diff --git a/include/configs/SIMPC8313.h b/include/configs/SIMPC8313.h index f62a705195..b939cfa79f 100644 --- a/include/configs/SIMPC8313.h +++ b/include/configs/SIMPC8313.h @@ -205,6 +205,9 @@ #define CONFIG_SYS_NS16550 #define CONFIG_SYS_NS16550_SERIAL #define CONFIG_SYS_NS16550_REG_SIZE 1 +#ifdef CONFIG_NAND_SPL +#define CONFIG_NS16550_MIN_FUNCTIONS +#endif #define CONFIG_SYS_BAUDRATE_TABLE \ {300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 115200} |