Dear Shinya Kuribayashi,
In message 4E886D01.5090003@pobox.com you wrote:
From: Xiangfu Liu xiangfu@openmobilefree.net Date: Fri, 19 Aug 2011 14:35:29 +0800
Jz4740 is a multimedia application processor targeting for mobile devices like e-Dictionary, eBook, portable media player (PMP) and GPS navigator. Jz4740 is powered by Ingenic 360 MHz XBurst CPU core (JzRISC), in which RISC/SIMD/DSP hybrid instruction set architecture provides high integration, high performance and low power consumption.
JzRISC incorporated in Jz4740 is the advanced and power-efficient 32-bit RISC core, compatible with MIPS32, with 16K I-Cache and 16K D-Cache, and can operate at speeds up to 400 MHz.
On-chip modules such as LCD controller, embedded audio codec, multi- channel SAR-ADC, AC97/I2S controller and camera I/F offer a rich suite of peripherals for multimedia application. NAND controller (SLC/MLC), USB (host 1.1 and device 2.0), UART, I2C, SPI, etc. are also available.
For more info about Ingenic XBurst Jz4740: http://en.ingenic.cn/eng/ http://www.linux-mips.org/wiki/Ingenic
This patch introduces XBurst CPU support in U-Boot. It's compatible with MIPS32, but requires a bit different cache maintenance, timer routines, and boot mechanism using USB boot tool, so XBurst support can go into a separate new home, cpu/xburst/.
Signed-off-by: Xiangfu Liu xiangfu@openmobilefree.net Acked-by: Daniel zpxu@ingenic.cn Signed-off-by: Shinya Kuribayashi skuribay@pobox.com
Changes since v6:
Rebased against the latest U-Boot/MIPS codebase (the previous patches up to v6 were based on v1.1.6). $gp usage, relocation code and so on are getting synced with the current MIPS support in U-Boot.
Use -mach=mips32, pass -EL specifiers in PLATFORM_CPPFLAGS and PLATFORM_LDFLAGS. This port works in Little-endian.
Remove NAND-boot stuff. Those bits will be submitted as a nand_spl support, once this Jz4740 base support is merged.
jzsoc_init() is removed. calc_clocks() and rtc_init() will be called through board_early_init_f().
jz_serial.c is almost the same with standard ns16550 driver, but we dont' use it, because it need a special tweak for jz4740 like this:
@@ -39,7 +39,11 @@ void NS16550_init (NS16550_t com_port, int baud_divisor) serial_out(0, &com_port->dlm); serial_out(UART_LCRVAL, &com_port->lcr); serial_out(UART_MCRVAL, &com_port->mcr); +#if defined(CONFIG_JZ4740) /* 0x10: for JZ4740 UART Module Enable */
- serial_out(UART_FCRVAL | 0x10, &com_port->fcr);
+#else serial_out(UART_FCRVAL, &com_port->fcr); +#endif serial_out(UART_LCR_BKSE | UART_LCRVAL, &com_port->lcr); serial_out(baud_divisor & 0xff, &com_port->dll); serial_out((baud_divisor >> 8) & 0xff, &com_port->dlm);
If this is acceptable, we'll change to use standard ns16550 later.
- Coding styles and build warnings fixed
README | 1 + arch/mips/cpu/xburst/Makefile | 49 ++ arch/mips/cpu/xburst/config.mk | 24 + arch/mips/cpu/xburst/cpu.c | 152 +++++ arch/mips/cpu/xburst/jz4740.c | 248 ++++++++ arch/mips/cpu/xburst/jz_serial.c | 114 ++++ arch/mips/cpu/xburst/start.S | 171 ++++++ arch/mips/cpu/xburst/timer.c | 169 ++++++ arch/mips/include/asm/global_data.h | 11 + arch/mips/include/asm/jz4740.h | 1115 +++++++++++++++++++++++++++++++++++ 10 files changed, 2054 insertions(+), 0 deletions(-) create mode 100644 arch/mips/cpu/xburst/Makefile create mode 100644 arch/mips/cpu/xburst/config.mk create mode 100644 arch/mips/cpu/xburst/cpu.c create mode 100644 arch/mips/cpu/xburst/jz4740.c create mode 100644 arch/mips/cpu/xburst/jz_serial.c create mode 100644 arch/mips/cpu/xburst/start.S create mode 100644 arch/mips/cpu/xburst/timer.c create mode 100644 arch/mips/include/asm/jz4740.h
Checkpatch says:
total: 6 errors, 94 warnings, 2077 lines checked
Please clean up and resubmit. Thanks.
Best regards,
Wolfgang Denk