summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/fm/fm.c4
-rw-r--r--drivers/serial/sandbox.c44
2 files changed, 39 insertions, 9 deletions
diff --git a/drivers/net/fm/fm.c b/drivers/net/fm/fm.c
index 49c74c2..8d70586 100644
--- a/drivers/net/fm/fm.c
+++ b/drivers/net/fm/fm.c
@@ -362,7 +362,6 @@ static void fm_init_qmi(struct fm_qmi_common *qmi)
int fm_init_common(int index, struct ccsr_fman *reg)
{
int rc;
- char env_addr[32];
#if defined(CONFIG_SYS_QE_FMAN_FW_IN_NOR)
void *addr = (void *)CONFIG_SYS_QE_FMAN_FW_ADDR;
#elif defined(CONFIG_SYS_QE_FMAN_FW_IN_NAND)
@@ -416,8 +415,7 @@ int fm_init_common(int index, struct ccsr_fman *reg)
rc = fman_upload_firmware(index, &reg->fm_imem, addr);
if (rc)
return rc;
- sprintf(env_addr, "0x%lx", (long unsigned int)addr);
- setenv("fman_ucode", env_addr);
+ setenv_addr("fman_ucode", addr);
fm_init_muram(index, &reg->muram);
fm_init_qmi(&reg->fm_qmi_common);
diff --git a/drivers/serial/sandbox.c b/drivers/serial/sandbox.c
index cb19401..b73520c 100644
--- a/drivers/serial/sandbox.c
+++ b/drivers/serial/sandbox.c
@@ -30,6 +30,19 @@
#include <serial.h>
#include <linux/compiler.h>
+/*
+ *
+ * serial_buf: A buffer that holds keyboard characters for the
+ * Sandbox U-boot.
+ *
+ * invariants:
+ * serial_buf_write == serial_buf_read -> empty buffer
+ * (serial_buf_write + 1) % 16 == serial_buf_read -> full buffer
+ */
+static char serial_buf[16];
+static unsigned int serial_buf_write;
+static unsigned int serial_buf_read;
+
static int sandbox_serial_init(void)
{
os_tty_raw(0);
@@ -50,18 +63,37 @@ static void sandbox_serial_puts(const char *str)
os_write(1, str, strlen(str));
}
-static int sandbox_serial_getc(void)
+static unsigned int increment_buffer_index(unsigned int index)
+{
+ return (index + 1) % ARRAY_SIZE(serial_buf);
+}
+
+static int sandbox_serial_tstc(void)
{
- char buf;
+ const unsigned int next_index =
+ increment_buffer_index(serial_buf_write);
ssize_t count;
- count = os_read(0, &buf, 1);
- return count == 1 ? buf : 0;
+ os_usleep(100);
+ if (next_index == serial_buf_read)
+ return 1; /* buffer full */
+
+ count = os_read_no_block(0, &serial_buf[serial_buf_write], 1);
+ if (count == 1)
+ serial_buf_write = next_index;
+ return serial_buf_write != serial_buf_read;
}
-static int sandbox_serial_tstc(void)
+static int sandbox_serial_getc(void)
{
- return 0;
+ int result;
+
+ while (!sandbox_serial_tstc())
+ ; /* buffer empty */
+
+ result = serial_buf[serial_buf_read];
+ serial_buf_read = increment_buffer_index(serial_buf_read);
+ return result;
}
static struct serial_device sandbox_serial_drv = {