/* UART_DM uses four character word FIFO where as UART core
* uses a character FIFO. so it's really inefficient to try
* to write single character. But that's how dprintf has been
* implemented.
*/
int uart_putc(int port, char c)
{
msm_boot_uart_dm_write(&c, 1);
return 0;
}
/**
* do_uartwr - transmits a string of data
* @s: string to transmit
*/
static int do_uartwr(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
char *s = argv[2];
int port_no, port_max = IPQ_UART_MAX;
uart_cfg_t *uart_tmp_cfg = gboard_param->uart_cfg;
if (argc < 3)
goto usage;
port_no = (int)simple_strtoul(argv[1], NULL, 10);
if (port_no > port_max) {
printf("Invalid uart port for write: use port from 0 to %d\n",
(port_max - 1));
} else {
uart_tmp_cfg = uart_tmp_cfg + port_no;
if (uart_tmp_cfg->base > 0) {
while (*s != '\0')
msm_boot_uart_dm_write(s++, 1, uart_tmp_cfg);
} else {
printf("This port %d is not suppported for additional uart write\n",
port_no);
}
}
return 0;
usage:
return CMD_RET_USAGE;
}
void uart_init(void)
{
char *data = "Android Bootloader - UART_DM Initialized!!!\n";
msm_boot_uart_dm_init();
msm_boot_uart_dm_write(data, 44);
}
/* UART_DM uses four character word FIFO where as UART core
* uses a character FIFO. so it's really inefficient to try
* to write single character. But that's how dprintf has been
* implemented.
*/
int uart_putc(int port, char c)
{
uint32_t uart_base = port_lookup[port];
/* Don't do anything if UART is not initialized */
if (!uart_init_flag)
return -1;
msm_boot_uart_dm_write(uart_base, &c, 1);
return 0;
}
/* Defining functions that's exposed to outside world and in coformance to
* existing uart implemention. These functions are being called to initialize
* UART and print debug messages in bootloader.
*/
void uart_dm_init(uint8_t id, uint32_t gsbi_base, uint32_t uart_dm_base)
{
static uint8_t port = 0;
char *data = "Android Bootloader - UART_DM Initialized!!!\n";
/* Configure the uart clock */
clock_config_uart_dm(id);
dsb();
/* Configure GPIO to provide connectivity between UART block
product ports and chip pads */
gpio_config_uart_dm(id);
dsb();
/* Configure GSBI for UART_DM protocol.
* I2C on 2 ports, UART (without HS flow control) on the other 2.
* This is only on chips that have GSBI block
*/
if(gsbi_base)
writel(GSBI_PROTOCOL_CODE_I2C_UART <<
GSBI_CTRL_REG_PROTOCOL_CODE_S,
GSBI_CTRL_REG(gsbi_base));
dsb();
/* Configure clock selection register for tx and rx rates.
* Selecting 115.2k for both RX and TX.
*/
writel(UART_DM_CLK_RX_TX_BIT_RATE, MSM_BOOT_UART_DM_CSR(uart_dm_base));
dsb();
/* Intialize UART_DM */
msm_boot_uart_dm_init(uart_dm_base);
msm_boot_uart_dm_write(uart_dm_base, data, 44);
ASSERT(port < ARRAY_SIZE(port_lookup));
port_lookup[port++] = uart_dm_base;
/* Set UART init flag */
uart_init_flag = 1;
}
/**
* serial_putc - transmits a character
* @c: character to transmit
*/
void serial_putc(char c)
{
uart_cfg_t *uart_tmp_cfg = gboard_param->console_uart_cfg;
msm_boot_uart_dm_write(&c, 1, uart_tmp_cfg);
}
