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| author | Antony Pavlov <antonynpavlov@gmail.com> | 2015-11-03 08:23:51 +0300 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-11-03 08:25:56 +0100 |
| commit | 82bd8277f211ef01bd5484fec058d1ae94b012a2 (patch) | |
| tree | fa7b1440ff458e36c6a731425532e63cecd0fc3c /arch/mips/mach-ath79 | |
| parent | 61163945cfec8c88d9d77e6c53b76a91760fa07f (diff) | |
| download | barebox-82bd8277f211ef01bd5484fec058d1ae94b012a2.tar.gz barebox-82bd8277f211ef01bd5484fec058d1ae94b012a2.tar.xz | |
MIPS: ath79: add debug_ll_ar9331_init macro
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/mips/mach-ath79')
| -rw-r--r-- | arch/mips/mach-ath79/include/mach/debug_ll.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/mips/mach-ath79/include/mach/debug_ll.h b/arch/mips/mach-ath79/include/mach/debug_ll.h index d3813afb7d..e0c3f797b2 100644 --- a/arch/mips/mach-ath79/include/mach/debug_ll.h +++ b/arch/mips/mach-ath79/include/mach/debug_ll.h @@ -63,6 +63,35 @@ static inline void PUTC_LL(int ch) * Macros for use in assembly language code */ +#define AR933X_UART_CS_REG 0x04 +#define UART_CS_REG ((KSEG1 | AR933X_UART_BASE) | AR933X_UART_CS_REG) +#define AR933X_UART_CS_IF_MODE_S 2 +#define AR933X_UART_CS_IF_MODE_DCE 2 +#define AR933X_UART_CS_TX_READY_ORIDE BIT(7) +#define AR933X_UART_CS_RX_READY_ORIDE BIT(8) + +/* + * simple uart clock setup + * from u-boot_mod/u-boot/cpu/mips/ar7240/hornet_serial.c + */ +#define BAUD_CLOCK 25000000 +#define CLOCK_SCALE ((BAUD_CLOCK / (16 * CONFIG_BAUDRATE)) - 1) +#define CLOCK_STEP 0x2000 + +#define AR933X_UART_CLOCK_REG 0x08 +#define CLOCK_REG ((KSEG1 | AR933X_UART_BASE) | AR933X_UART_CLOCK_REG) + +.macro debug_ll_ar9331_init +#ifdef CONFIG_DEBUG_LL + + pbl_reg_writel ((AR933X_UART_CS_IF_MODE_DCE << AR933X_UART_CS_IF_MODE_S) \ + | AR933X_UART_CS_TX_READY_ORIDE \ + | AR933X_UART_CS_RX_READY_ORIDE), UART_CS_REG + pbl_reg_writel ((CLOCK_SCALE << 16) | CLOCK_STEP), CLOCK_REG + +#endif /* CONFIG_DEBUG_LL */ +.endm + /* * output a character in a0 */ |