diff options
Diffstat (limited to 'arch/arm/plat-s3c/include/plat/uncompress.h')
| -rw-r--r-- | arch/arm/plat-s3c/include/plat/uncompress.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c/include/plat/uncompress.h b/arch/arm/plat-s3c/include/plat/uncompress.h index 8a8a927292e..2c39a309aeb 100644 --- a/arch/arm/plat-s3c/include/plat/uncompress.h +++ b/arch/arm/plat-s3c/include/plat/uncompress.h @@ -139,6 +139,28 @@ static void arch_decomp_error(const char *x) static void error(char *err); +#ifdef CONFIG_S3C_BOOT_UART_FORCE_FIFO +static inline void arch_enable_uart_fifo(void) +{ + u32 fifocon = uart_rd(S3C2410_UFCON); + + if (!(fifocon & S3C2410_UFCON_FIFOMODE)) { + fifocon |= S3C2410_UFCON_RESETBOTH; + uart_wr(S3C2410_UFCON, fifocon); + + /* wait for fifo reset to complete */ + while (1) { + fifocon = uart_rd(S3C2410_UFCON); + if (!(fifocon & S3C2410_UFCON_RESETBOTH)) + break; + } + } +} +#else +#define arch_enable_uart_fifo() do { } while(0) +#endif + + static void arch_decomp_setup(void) { @@ -149,6 +171,12 @@ arch_decomp_setup(void) arch_detect_cpu(); arch_decomp_wdog_start(); + + /* Enable the UART FIFOs if they where not enabled and our + * configuration says we should turn them on. + */ + + arch_enable_uart_fifo(); } |