From f6e6eadc99c6274207f8f2ebc739063549959a1f Mon Sep 17 00:00:00 2001 From: Alexander Couzens Date: Wed, 11 Apr 2018 03:17:44 +0200 Subject: [PATCH] packages/uboot-omap: bugfix: serial using ns16550 fifo not enabled The serial was working before, but not when doing copy&pasting longer commands in a short time. Fixes: a4def18f29e1 ("uboot-omap: Update to u-boot v2017.01") Signed-off-by: Alexander Couzens --- package/boot/uboot-omap/Makefile | 2 +- ...6550-bugfix-ns16550-fifo-not-enabled.patch | 309 ++++++++++++++++++ 2 files changed, 310 insertions(+), 1 deletion(-) create mode 100644 package/boot/uboot-omap/patches/105-serial-ns16550-bugfix-ns16550-fifo-not-enabled.patch diff --git a/package/boot/uboot-omap/Makefile b/package/boot/uboot-omap/Makefile index 9084f374022..0d5260d1217 100644 --- a/package/boot/uboot-omap/Makefile +++ b/package/boot/uboot-omap/Makefile @@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk include $(INCLUDE_DIR)/kernel.mk PKG_VERSION:=2017.01 -PKG_RELEASE:=1 +PKG_RELEASE:=2 PKG_HASH:=6c425175f93a4bcf2ec9faf5658ef279633dbd7856a293d95bd1ff516528ecf2 diff --git a/package/boot/uboot-omap/patches/105-serial-ns16550-bugfix-ns16550-fifo-not-enabled.patch b/package/boot/uboot-omap/patches/105-serial-ns16550-bugfix-ns16550-fifo-not-enabled.patch new file mode 100644 index 00000000000..513efaf74db --- /dev/null +++ b/package/boot/uboot-omap/patches/105-serial-ns16550-bugfix-ns16550-fifo-not-enabled.patch @@ -0,0 +1,309 @@ +From 17fa032671f7981628fe16b30399638842a4b1bb Mon Sep 17 00:00:00 2001 +From: Heiko Schocher +Date: Wed, 18 Jan 2017 08:05:49 +0100 +Subject: [PATCH] serial, ns16550: bugfix: ns16550 fifo not enabled + +commit: 65f83802b7a5b "serial: 16550: Add getfcr accessor" +breaks u-boot commandline working with long commands +sending to the board. + +Since the above patch, you have to setup the fcr register. + +For board/archs which enable OF_PLATDATA, the new field +fcr in struct ns16550_platdata is not filled with a +default value ... + +This leads in not setting up the uarts fifo, which ends +in problems, when you send long commands to u-boots +commandline. + +Detected this issue with automated tbot tests on am335x +based shc board. + +The error does not popup, if you type commands. You need +to copy&paste a long command to u-boots commandshell +(or send a long command with tbot) + +Possible boards/plattforms with problems: +./arch/arm/cpu/arm926ejs/lpc32xx/devices.c +./arch/arm/mach-tegra/board.c +./board/overo/overo.c +./board/quipos/cairo/cairo.c +./board/logicpd/omap3som/omap3logic.c +./board/logicpd/zoom1/zoom1.c +./board/timll/devkit8000/devkit8000.c +./board/lg/sniper/sniper.c +./board/ti/beagle/beagle.c +./drivers/serial/serial_rockchip.c + +Signed-off-by: Heiko Schocher +Signed-off-by: Ladislav Michl +Tested-by: Adam Ford +Reviewed-by: Tom Rini +--- + arch/arm/cpu/arm926ejs/lpc32xx/devices.c | 12 ++++++++---- + arch/arm/mach-omap2/am33xx/board.c | 18 ++++++++++++------ + arch/arm/mach-tegra/board.c | 1 + + board/isee/igep00x0/igep00x0.c | 3 ++- + board/lg/sniper/sniper.c | 3 ++- + board/logicpd/omap3som/omap3logic.c | 3 ++- + board/logicpd/zoom1/zoom1.c | 3 ++- + board/overo/overo.c | 3 ++- + board/quipos/cairo/cairo.c | 3 ++- + board/ti/beagle/beagle.c | 3 ++- + board/timll/devkit8000/devkit8000.c | 3 ++- + drivers/serial/ns16550.c | 9 +++------ + drivers/serial/serial_rockchip.c | 1 + + include/ns16550.h | 5 +++++ + 14 files changed, 46 insertions(+), 24 deletions(-) + +diff --git a/arch/arm/cpu/arm926ejs/lpc32xx/devices.c b/arch/arm/cpu/arm926ejs/lpc32xx/devices.c +index 399b07c5420a..f744398ca7ad 100644 +--- a/arch/arm/cpu/arm926ejs/lpc32xx/devices.c ++++ b/arch/arm/cpu/arm926ejs/lpc32xx/devices.c +@@ -45,10 +45,14 @@ void lpc32xx_uart_init(unsigned int uart_id) + + #if !CONFIG_IS_ENABLED(OF_CONTROL) + static const struct ns16550_platdata lpc32xx_uart[] = { +- { .base = UART3_BASE, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, +- { .base = UART4_BASE, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, +- { .base = UART5_BASE, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, +- { .base = UART6_BASE, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, ++ { .base = UART3_BASE, .reg_shift = 2, ++ .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, ++ { .base = UART4_BASE, .reg_shift = 2, ++ .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, ++ { .base = UART5_BASE, .reg_shift = 2, ++ .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, ++ { .base = UART6_BASE, .reg_shift = 2, ++ .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, + }; + + #if defined(CONFIG_LPC32XX_HSUART) +diff --git a/arch/arm/mach-omap2/am33xx/board.c b/arch/arm/mach-omap2/am33xx/board.c +index 73824df18fa7..190310fd0079 100644 +--- a/arch/arm/mach-omap2/am33xx/board.c ++++ b/arch/arm/mach-omap2/am33xx/board.c +@@ -40,14 +40,20 @@ DECLARE_GLOBAL_DATA_PTR; + + #if !CONFIG_IS_ENABLED(OF_CONTROL) + static const struct ns16550_platdata am33xx_serial[] = { +- { .base = CONFIG_SYS_NS16550_COM1, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, ++ { .base = CONFIG_SYS_NS16550_COM1, .reg_shift = 2, ++ .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, + # ifdef CONFIG_SYS_NS16550_COM2 +- { .base = CONFIG_SYS_NS16550_COM2, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, ++ { .base = CONFIG_SYS_NS16550_COM2, .reg_shift = 2, ++ .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, + # ifdef CONFIG_SYS_NS16550_COM3 +- { .base = CONFIG_SYS_NS16550_COM3, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, +- { .base = CONFIG_SYS_NS16550_COM4, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, +- { .base = CONFIG_SYS_NS16550_COM5, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, +- { .base = CONFIG_SYS_NS16550_COM6, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, ++ { .base = CONFIG_SYS_NS16550_COM3, .reg_shift = 2, ++ .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, ++ { .base = CONFIG_SYS_NS16550_COM4, .reg_shift = 2, ++ .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, ++ { .base = CONFIG_SYS_NS16550_COM5, .reg_shift = 2, ++ .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, ++ { .base = CONFIG_SYS_NS16550_COM6, .reg_shift = 2, ++ .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, }, + # endif + # endif + }; +diff --git a/arch/arm/mach-tegra/board.c b/arch/arm/mach-tegra/board.c +index 3d1d26d13d13..b3a041b539af 100644 +--- a/arch/arm/mach-tegra/board.c ++++ b/arch/arm/mach-tegra/board.c +@@ -219,6 +219,7 @@ static struct ns16550_platdata ns16550_com1_pdata = { + .base = CONFIG_SYS_NS16550_COM1, + .reg_shift = 2, + .clock = CONFIG_SYS_NS16550_CLK, ++ .fcr = UART_FCR_DEFVAL, + }; + + U_BOOT_DEVICE(ns16550_com1) = { +diff --git a/board/isee/igep00x0/igep00x0.c b/board/isee/igep00x0/igep00x0.c +index ae7959b1eb6e..5a3498f570a6 100644 +--- a/board/isee/igep00x0/igep00x0.c ++++ b/board/isee/igep00x0/igep00x0.c +@@ -32,7 +32,8 @@ DECLARE_GLOBAL_DATA_PTR; + static const struct ns16550_platdata igep_serial = { + .base = OMAP34XX_UART3, + .reg_shift = 2, +- .clock = V_NS16550_CLK ++ .clock = V_NS16550_CLK, ++ .fcr = UART_FCR_DEFVAL, + }; + + U_BOOT_DEVICE(igep_uart) = { +diff --git a/board/lg/sniper/sniper.c b/board/lg/sniper/sniper.c +index 0662449c3875..b2b8f8861f11 100644 +--- a/board/lg/sniper/sniper.c ++++ b/board/lg/sniper/sniper.c +@@ -31,7 +31,8 @@ const omap3_sysinfo sysinfo = { + static const struct ns16550_platdata serial_omap_platdata = { + .base = OMAP34XX_UART3, + .reg_shift = 2, +- .clock = V_NS16550_CLK ++ .clock = V_NS16550_CLK, ++ .fcr = UART_FCR_DEFVAL, + }; + + U_BOOT_DEVICE(sniper_serial) = { +diff --git a/board/logicpd/omap3som/omap3logic.c b/board/logicpd/omap3som/omap3logic.c +index 21b3fdcf49cf..b2fcc28f8b4b 100644 +--- a/board/logicpd/omap3som/omap3logic.c ++++ b/board/logicpd/omap3som/omap3logic.c +@@ -49,7 +49,8 @@ DECLARE_GLOBAL_DATA_PTR; + static const struct ns16550_platdata omap3logic_serial = { + .base = OMAP34XX_UART1, + .reg_shift = 2, +- .clock = V_NS16550_CLK ++ .clock = V_NS16550_CLK, ++ .fcr = UART_FCR_DEFVAL, + }; + + U_BOOT_DEVICE(omap3logic_uart) = { +diff --git a/board/logicpd/zoom1/zoom1.c b/board/logicpd/zoom1/zoom1.c +index 2821ee22674f..0fad23af62f6 100644 +--- a/board/logicpd/zoom1/zoom1.c ++++ b/board/logicpd/zoom1/zoom1.c +@@ -47,7 +47,8 @@ static const u32 gpmc_lab_enet[] = { + static const struct ns16550_platdata zoom1_serial = { + .base = OMAP34XX_UART3, + .reg_shift = 2, +- .clock = V_NS16550_CLK ++ .clock = V_NS16550_CLK, ++ .fcr = UART_FCR_DEFVAL, + }; + + U_BOOT_DEVICE(zoom1_uart) = { +diff --git a/board/overo/overo.c b/board/overo/overo.c +index 40f13e5876cc..5e447262bcfd 100644 +--- a/board/overo/overo.c ++++ b/board/overo/overo.c +@@ -70,7 +70,8 @@ static struct { + static const struct ns16550_platdata overo_serial = { + .base = OMAP34XX_UART3, + .reg_shift = 2, +- .clock = V_NS16550_CLK ++ .clock = V_NS16550_CLK, ++ .fcr = UART_FCR_DEFVAL, + }; + + U_BOOT_DEVICE(overo_uart) = { +diff --git a/board/quipos/cairo/cairo.c b/board/quipos/cairo/cairo.c +index 77e4482906f0..793aa9023150 100644 +--- a/board/quipos/cairo/cairo.c ++++ b/board/quipos/cairo/cairo.c +@@ -93,7 +93,8 @@ void get_board_mem_timings(struct board_sdrc_timings *timings) + static const struct ns16550_platdata cairo_serial = { + .base = OMAP34XX_UART2, + .reg_shift = 2, +- .clock = V_NS16550_CLK ++ .clock = V_NS16550_CLK, ++ .fcr = UART_FCR_DEFVAL, + }; + + U_BOOT_DEVICE(cairo_uart) = { +diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c +index cfdab3e34253..23c79333a223 100644 +--- a/board/ti/beagle/beagle.c ++++ b/board/ti/beagle/beagle.c +@@ -75,7 +75,8 @@ static struct { + static const struct ns16550_platdata beagle_serial = { + .base = OMAP34XX_UART3, + .reg_shift = 2, +- .clock = V_NS16550_CLK ++ .clock = V_NS16550_CLK, ++ .fcr = UART_FCR_DEFVAL, + }; + + U_BOOT_DEVICE(beagle_uart) = { +diff --git a/board/timll/devkit8000/devkit8000.c b/board/timll/devkit8000/devkit8000.c +index f785dbe6d732..b2f060b2ddbf 100644 +--- a/board/timll/devkit8000/devkit8000.c ++++ b/board/timll/devkit8000/devkit8000.c +@@ -48,7 +48,8 @@ static u32 gpmc_net_config[GPMC_MAX_REG] = { + static const struct ns16550_platdata devkit8000_serial = { + .base = OMAP34XX_UART3, + .reg_shift = 2, +- .clock = V_NS16550_CLK ++ .clock = V_NS16550_CLK, ++ .fcr = UART_FCR_DEFVAL, + }; + + U_BOOT_DEVICE(devkit8000_uart) = { +diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c +index 9b423a591d8a..2df4a1f04fe5 100644 +--- a/drivers/serial/ns16550.c ++++ b/drivers/serial/ns16550.c +@@ -20,9 +20,6 @@ DECLARE_GLOBAL_DATA_PTR; + #define UART_LCRVAL UART_LCR_8N1 /* 8 data, 1 stop, no parity */ + #define UART_MCRVAL (UART_MCR_DTR | \ + UART_MCR_RTS) /* RTS/DTR */ +-#define UART_FCRVAL (UART_FCR_FIFO_EN | \ +- UART_FCR_RXSR | \ +- UART_FCR_TXSR) /* Clear & enable FIFOs */ + + #ifndef CONFIG_DM_SERIAL + #ifdef CONFIG_SYS_NS16550_PORT_MAPPED +@@ -138,7 +135,7 @@ static u32 ns16550_getfcr(NS16550_t port) + #else + static u32 ns16550_getfcr(NS16550_t port) + { +- return UART_FCRVAL; ++ return UART_FCR_DEFVAL; + } + #endif + +@@ -275,7 +272,7 @@ static inline void _debug_uart_init(void) + CONFIG_BAUDRATE); + serial_dout(&com_port->ier, CONFIG_SYS_NS16550_IER); + serial_dout(&com_port->mcr, UART_MCRVAL); +- serial_dout(&com_port->fcr, UART_FCRVAL); ++ serial_dout(&com_port->fcr, UART_FCR_DEFVAL); + + serial_dout(&com_port->lcr, UART_LCR_BKSE | UART_LCRVAL); + serial_dout(&com_port->dll, baud_divisor & 0xff); +@@ -440,7 +437,7 @@ int ns16550_serial_ofdata_to_platdata(struct udevice *dev) + return -EINVAL; + } + +- plat->fcr = UART_FCRVAL; ++ plat->fcr = UART_FCR_DEFVAL; + if (port_type == PORT_JZ4780) + plat->fcr |= UART_FCR_UME; + +diff --git a/drivers/serial/serial_rockchip.c b/drivers/serial/serial_rockchip.c +index 6bac95a414ce..c06afc58f7ea 100644 +--- a/drivers/serial/serial_rockchip.c ++++ b/drivers/serial/serial_rockchip.c +@@ -27,6 +27,7 @@ static int rockchip_serial_probe(struct udevice *dev) + plat->plat.base = plat->dtplat.reg[0]; + plat->plat.reg_shift = plat->dtplat.reg_shift; + plat->plat.clock = plat->dtplat.clock_frequency; ++ plat->plat.fcr = UART_FCR_DEFVAL; + dev->platdata = &plat->plat; + + return ns16550_serial_probe(dev); +diff --git a/include/ns16550.h b/include/ns16550.h +index 7c9703683109..5fcbcd2e74e3 100644 +--- a/include/ns16550.h ++++ b/include/ns16550.h +@@ -121,6 +121,11 @@ typedef struct NS16550 *NS16550_t; + /* Ingenic JZ47xx specific UART-enable bit. */ + #define UART_FCR_UME 0x10 + ++/* Clear & enable FIFOs */ ++#define UART_FCR_DEFVAL (UART_FCR_FIFO_EN | \ ++ UART_FCR_RXSR | \ ++ UART_FCR_TXSR) ++ + /* + * These are the definitions for the Modem Control Register + */ +-- +2.17.0 + -- 2.30.2