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authorPatrick Georgi <pgeorgi@google.com>2015-03-30 13:08:18 +0200
committerPatrick Georgi <pgeorgi@google.com>2015-03-30 20:41:22 +0200
commit146d05da93c3cfdb97023ead2cb673a8d5de6b4f (patch)
tree96705ba4f253569e88373f47a3ddad790f0fba5f /src/soc/imgtec/pistachio/uart.c
parent4697d09f1a6625e3d38ec7d92a18b3853c359fa8 (diff)
downloadcoreboot-146d05da93c3cfdb97023ead2cb673a8d5de6b4f.tar.xz
imgtec/pistachio: Bring uart driver to modern standards
The console interface changed in upstream, and the driver didn't reflect that yet. This wasn't obvious because the driver wasn't compiled at all. Change-Id: Id18391e62e7ebd8f5fc929838ce27bf414e364f9 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Reviewed-on: http://review.coreboot.org/9165 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
Diffstat (limited to 'src/soc/imgtec/pistachio/uart.c')
-rw-r--r--src/soc/imgtec/pistachio/uart.c75
1 files changed, 22 insertions, 53 deletions
diff --git a/src/soc/imgtec/pistachio/uart.c b/src/soc/imgtec/pistachio/uart.c
index 53bf21d226..9c96b89f8e 100644
--- a/src/soc/imgtec/pistachio/uart.c
+++ b/src/soc/imgtec/pistachio/uart.c
@@ -22,11 +22,12 @@
*/
#include <arch/io.h>
+#include <boot/coreboot_tables.h>
#include <console/console.h>
+#include <console/uart.h>
#include <device/device.h>
#include <delay.h>
-#include <uart.h>
-#include <uart8250.h>
+#include <drivers/uart/uart8250reg.h>
/* Should support 8250, 16450, 16550, 16550A type UARTs */
@@ -115,13 +116,13 @@ static void uart8250_mem_init(unsigned base_port, unsigned divisor)
write_lcr(base_port, CONFIG_TTYS0_LCS);
}
-static unsigned int uart_platform_refclk(void)
+unsigned int uart_platform_refclk(void)
{
/* TODO: this is entirely arbitrary */
return 1000000;
}
-static unsigned int uart_platform_base(int idx)
+uintptr_t uart_platform_base(int idx)
{
switch (idx) {
case 0:
@@ -135,16 +136,9 @@ static unsigned int uart_platform_base(int idx)
}
}
-/* Calculate divisor. Do not floor but round to nearest integer. */
-static unsigned int uart_baudrate_divisor(unsigned int baudrate,
- unsigned int refclk, unsigned int oversample)
+void uart_init(int idx)
{
- return (1 + (2 * refclk) / (baudrate * oversample)) / 2;
-}
-
-static void pistachio_uart_init(void)
-{
- u32 base = uart_platform_base(0);
+ u32 base = uart_platform_base(idx);
if (!base)
return;
@@ -154,64 +148,39 @@ static void pistachio_uart_init(void)
uart8250_mem_init(base, div);
}
-static void pistachio_uart_tx_byte(unsigned char data)
+void uart_tx_byte(int idx, unsigned char data)
{
- u32 base = uart_platform_base(0);
+ u32 base = uart_platform_base(idx);
if (!base)
return;
uart8250_mem_tx_byte(base, data);
}
-static unsigned char pistachio_uart_rx_byte(void)
+unsigned char uart_rx_byte(int idx)
{
- u32 base = uart_platform_base(0);
+ u32 base = uart_platform_base(idx);
if (!base)
return 0xff;
return uart8250_mem_rx_byte(base);
}
-static void pistachio_uart_tx_flush(void)
+void uart_tx_flush(int idx)
{
- u32 base = uart_platform_base(0);
+ u32 base = uart_platform_base(idx);
if (!base)
return;
uart8250_mem_tx_flush(base);
}
-#if !defined(__PRE_RAM__)
-
-static const struct console_driver pistachio_uart_console __console = {
- .init = pistachio_uart_init,
- .tx_byte = pistachio_uart_tx_byte,
- .tx_flush = pistachio_uart_tx_flush,
- .rx_byte = pistachio_uart_rx_byte,
-};
-
-uint32_t uartmem_getbaseaddr(void)
-{
- return uart_platform_base(0);
-}
-
-#else /* __PRE_RAM__ */
-
-void uart_init(void)
-{
- pistachio_uart_init();
-}
-
-void uart_tx_byte(unsigned char data)
+#ifndef __PRE_RAM__
+void uart_fill_lb(void *data)
{
- pistachio_uart_tx_byte(data);
-}
+ struct lb_serial serial;
+ serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
+ serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
+ serial.baud = default_baudrate();
+ lb_add_serial(&serial, data);
-unsigned char uart_rx_byte(void)
-{
- return pistachio_uart_rx_byte();
+ lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
}
-
-void uart_tx_flush(void)
-{
- pistachio_uart_tx_flush();
-}
-
-#endif /* __PRE_RAM__ */
+#endif