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authorDavid Hendricks <dhendrix@chromium.org>2013-02-04 20:42:12 -0800
committerStefan Reinauer <stefan.reinauer@coreboot.org>2013-02-05 23:37:36 +0100
commit15a66a10b53c257b549f6c9efe6355e39556a8c5 (patch)
tree347a9b5be2eb64a259f2cbbb12a746371ed80fe9 /src
parent4c2aafe586d5214409b4de0affb5f743477d2f1c (diff)
snow: use bootblock build class for UART code
This gets rid of a bunch of copy + pasted code from Exynos UART files. Change-Id: I9fbb6d79a40a338c9fdecd495544ff207909fd37 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2286 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
Diffstat (limited to 'src')
-rw-r--r--src/cpu/samsung/exynos5250/Makefile.inc2
-rw-r--r--src/cpu/samsung/exynos5250/uart.c2
-rw-r--r--src/mainboard/google/snow/bootblock.c127
3 files changed, 8 insertions, 123 deletions
diff --git a/src/cpu/samsung/exynos5250/Makefile.inc b/src/cpu/samsung/exynos5250/Makefile.inc
index 3dcf461e1b..39e1c7eeb8 100644
--- a/src/cpu/samsung/exynos5250/Makefile.inc
+++ b/src/cpu/samsung/exynos5250/Makefile.inc
@@ -8,6 +8,8 @@
# in the bootblock and try moving it entirely into romstage.
bootblock-y += clock_init.c
bootblock-y += clock.c
+bootblock-y += soc.c
+bootblock-y += uart.c
romstage-y += clock.c
romstage-y += clock_init.c
diff --git a/src/cpu/samsung/exynos5250/uart.c b/src/cpu/samsung/exynos5250/uart.c
index b219f48632..f3ee0815f0 100644
--- a/src/cpu/samsung/exynos5250/uart.c
+++ b/src/cpu/samsung/exynos5250/uart.c
@@ -188,7 +188,7 @@ static void exynos5_uart_tx_byte(unsigned char data)
writeb(data, &uart->utxh);
}
-#ifndef __PRE_RAM__
+#if !defined(__PRE_RAM__) && !defined(__BOOT_BLOCK__)
static const struct console_driver exynos5_uart_console __console = {
.init = exynos5_init_dev,
.tx_byte = exynos5_uart_tx_byte,
diff --git a/src/mainboard/google/snow/bootblock.c b/src/mainboard/google/snow/bootblock.c
index 58d347d5a6..2855ddbc27 100644
--- a/src/mainboard/google/snow/bootblock.c
+++ b/src/mainboard/google/snow/bootblock.c
@@ -32,10 +32,10 @@
#include "cpu/samsung/s5p-common/gpio.h"
#include "cpu/samsung/s5p-common/s3c24x0_i2c.h"
#include "cpu/samsung/exynos5-common/spi.h"
-#include "cpu/samsung/exynos5-common/uart.h"
#include <device/i2c.h>
#include <drivers/maxim/max77686/max77686.h>
+#include <uart.h>
#include <console/console.h>
#include <cbfs.h>
@@ -124,125 +124,8 @@ void gpio_set_pull(int gpio, int mode)
writel(value, &bank->pull);
}
-static uint32_t uart3_base = CONFIG_CONSOLE_SERIAL_UART_ADDRESS;
-
#define CONFIG_SYS_CLK_FREQ 24000000
-static void serial_setbrg_dev(void)
-{
-// struct s5p_uart *const uart = s5p_get_base_uart(dev_index);
- struct s5p_uart *uart = (struct s5p_uart *)uart3_base;
- u32 uclk;
- u32 baudrate = CONFIG_TTYS0_BAUD;
- u32 val;
-// enum periph_id periph;
-
-// periph = exynos5_get_periph_id(base_port);
- uclk = clock_get_periph_rate(PERIPH_ID_UART3);
- val = uclk / baudrate;
-
- writel(val / 16 - 1, &uart->ubrdiv);
-
- /*
- * FIXME(dhendrix): the original uart.h had a "br_rest" value which
- * does not seem relevant to the exynos5250... not entirely sure
- * where/if we need to worry about it here
- */
-#if 0
- if (s5p_uart_divslot())
- writew(udivslot[val % 16], &uart->rest.slot);
- else
- writeb(val % 16, &uart->rest.value);
-#endif
-}
-
-/*
- * Initialise the serial port with the given baudrate. The settings
- * are always 8 data bits, no parity, 1 stop bit, no start bits.
- */
-static void exynos5_init_dev(void)
-{
-// struct s5p_uart *const uart = s5p_get_base_uart(dev_index);
- struct s5p_uart *uart = (struct s5p_uart *)uart3_base;
-
- /* enable FIFOs */
- writel(0x1, &uart->ufcon);
- writel(0, &uart->umcon);
- /* 8N1 */
- writel(0x3, &uart->ulcon);
- /* No interrupts, no DMA, pure polling */
- writel(0x245, &uart->ucon);
-
- serial_setbrg_dev();
-}
-
-static int exynos5_uart_err_check(int op)
-{
- //struct s5p_uart *const uart = s5p_get_base_uart(dev_index);
- struct s5p_uart *uart = (struct s5p_uart *)uart3_base;
- unsigned int mask;
-
- /*
- * UERSTAT
- * Break Detect [3]
- * Frame Err [2] : receive operation
- * Parity Err [1] : receive operation
- * Overrun Err [0] : receive operation
- */
- if (op)
- mask = 0x8;
- else
- mask = 0xf;
-
- return readl(&uart->uerstat) & mask;
-}
-
-#define RX_FIFO_COUNT_MASK 0xff
-#define RX_FIFO_FULL_MASK (1 << 8)
-#define TX_FIFO_FULL_MASK (1 << 24)
-
-#if 0
-/*
- * Read a single byte from the serial port. Returns 1 on success, 0
- * otherwise. When the function is succesfull, the character read is
- * written into its argument c.
- */
-static unsigned char exynos5_uart_rx_byte(void)
-{
-// struct s5p_uart *const uart = s5p_get_base_uart(dev_index);
- struct s5p_uart *uart = (struct s5p_uart *)uart3_base;
-
- /* wait for character to arrive */
- while (!(readl(&uart->ufstat) & (RX_FIFO_COUNT_MASK |
- RX_FIFO_FULL_MASK))) {
- if (exynos5_uart_err_check(0))
- return 0;
- }
-
- return readb(&uart->urxh) & 0xff;
-}
-#endif
-
-/*
- * Output a single byte to the serial port.
- */
-static void exynos5_uart_tx_byte(unsigned char data)
-{
-// struct s5p_uart *const uart = s5p_get_base_uart(dev_index);
- struct s5p_uart *uart = (struct s5p_uart *)uart3_base;
-
- if (data == '\n')
- exynos5_uart_tx_byte('\r');
-
- /* wait for room in the tx FIFO */
- while ((readl(uart->ufstat) & TX_FIFO_FULL_MASK)) {
- if (exynos5_uart_err_check(1))
- return;
- }
-
- writeb(data, &uart->utxh);
-}
-
void puts(const char *s);
void puts(const char *s)
{
@@ -250,10 +133,10 @@ void puts(const char *s)
while (*s) {
if (*s == '\n') {
- exynos5_uart_tx_byte(0xd); /* CR */
+ uart_tx_byte(0xd); /* CR */
}
- exynos5_uart_tx_byte(*s++);
+ uart_tx_byte(*s++);
n++;
}
}
@@ -264,7 +147,7 @@ static void do_serial(void)
gpio_set_pull(GPIO_A14, EXYNOS_GPIO_PULL_NONE);
gpio_cfg_pin(GPIO_A15, EXYNOS_GPIO_FUNC(0x2));
- exynos5_init_dev();
+ uart_init();
}
#define I2C_WRITE 0
@@ -1616,7 +1499,7 @@ int do_printk(int msg_level, const char *fmt, ...)
int i;
va_start(args, fmt);
- i = vtxprintf(exynos5_uart_tx_byte, fmt, args);
+ i = vtxprintf(uart_tx_byte, fmt, args);
va_end(args);
return i;