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By default, the small core enables D-Cache without ensuring cache
coherence. Therefore, when using shared memory, inconsistencies can
occur in the data read by the small core and the big core.
Solution: Migrate cache-related functions from the official
duo-buildroot-sdk library to implement cache-related operations in
rthw.h. This allows you to either disable D-Cache or call the
flush_dcache_range function before reading and after writing for
synchronization.
It is recommended to use the flush_dcache_range function, as disabling
D-Cache can have a significant performance impact.
Signed-off-by: zdtyuiop4444 <[email protected]>
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Confirmed with milkv, only the sd card version is sold
by default for duo in the market. The spi pins are
provided through stamp holes, so that users can solder
the corresponding components on their baseboard during
secondary development.
In order to simplify maintenance work, the mainline
will only support the sd-card version and no longer
support spinor/spinand.
Updated config files the same in this patch.
Signed-off-by: Chen Wang <[email protected]>
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Analysis: Some macro definition names are not standardized
and lack prefixes.
Solution: Add BSP_ prefix to GPIO_IRQ_BASE SYS_GPIO_IRQ_BASE
PLIC_PHY_ADDR TIMER_CLK_FREQ UART_IRQ_BASE I2C_IRQ_BASE.
Signed-off-by: Shicheng Chu <[email protected]>
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Analysis: The IRQ_MAX_NR value of c906_little is wrong.
interrupt.h relies on IRQ_MAX_NR defined in rtconfig.h but
does not explicitly include this header file.
Solution: Change IRQ_MAX_NR to the correct value 61 in
the datasheet. Explicitly include rtconfig.h in interrupt.h.
Signed-off-by: Shicheng Chu <[email protected]>
Reviewed-by: Chen Wang <[email protected]>
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Board level UART pinmux summary, following capability
should be controlled by pinname whitelist.
Duo:
NAME UART CV1800B/GPIO <PINNAME>__<FUNCNAME>
---- --- ------------ ---------------------
GP13 UART0_RX XGPIOA[17] UART0_RX__UART0_RX
GP12 UART0_TX XGPIOA[16] UART0_TX__UART0_TX
GP1 UART1_RX XGPIOA[29] IIC0_SDA__UART1_RX
GP13 UART1_RX XGPIOA[17] UART0_RX__UART1_RX
GP0 UART1_TX XGPIOA[28] IIC0_SCL__UART1_TX
GP12 UART1_TX XGPIOA[16] UART0_TX__UART1_TX
GP1 UART2_RX XGPIOA[29] IIC0_SDA__UART2_RX
GP5 UART2_RX PWR_GPIO[20] SD1_D1__UART2_RX
GP0 UART2_TX XGPIOA[28] IIC0_SCL__UART2_TX
GP4 UART2_TX PWR_GPIO[19] SD1_D2__UART2_TX
GP5 UART3_RX PWR_GPIO[20] SD1_D1__UART3_RX
GP4 UART3_TX PWR_GPIO[19] SD1_D2__UART3_TX
GP3 UART4_RX PWR_GPIO[25] SD1_GPIO0__UART4_RX
GP2 UART4_TX PWR_GPIO[26] SD1_GPIO1__UART4_TX
Duo 256m:
NAME UART CV1800B/GPIO <PINNAME>__<FUNCNAME>
---- --- ------------ ---------------------
GP13 UART0_RX XGPIOA[17] UART0_RX__UART0_RX
GP12 UART0_TX XGPIOA[16] UART0_TX__UART0_TX
GP1 UART1_RX XGPIOA[29] IIC0_SDA__UART1_RX
GP3 UART1_RX XGPIOA[18] JTAG_CPU_TCK__UART1_RX
GP13 UART1_RX XGPIOA[17] UART0_RX__UART1_RX
GP0 UART1_TX XGPIOA[28] IIC0_SCL__UART1_TX
GP2 UART1_TX XGPIOA[19] JTAG_CPU_TMS__UART1_TX
GP12 UART1_TX XGPIOA[16] UART0_TX__UART1_TX
GP1 UART2_RX XGPIOA[29] IIC0_SDA__UART2_RX
GP5 UART2_RX PWR_GPIO[20] SD1_D1__UART2_RX
GP0 UART2_TX XGPIOA[28] IIC0_SCL__UART2_TX
GP4 UART2_TX PWR_GPIO[19] SD1_D2__UART2_TX
GP5 UART3_RX PWR_GPIO[20] SD1_D1__UART3_RX
GP4 UART3_TX PWR_GPIO[19] SD1_D2__UART3_TX
Note: this patch also update the .config and rtconfig.h
because this patch modify some configuration items's name,
for example: RT_USIMG_UART0 -> BSP_USING_UART0.
FIXME: only handle RISC-V related, no ARM.
Signed-off-by: Chen Wang <[email protected]>
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