diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/rockchip/Kconfig | 20 | ||||
| -rw-r--r-- | src/soc/rockchip/Makefile.inc | 20 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/Kconfig | 118 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/Makefile.inc | 39 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/addressmap.h | 102 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/bootblock.c | 28 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/cbmem.c | 29 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/media.c | 27 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/monotonic_timer.c | 40 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/timer.c | 58 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/timer.h | 43 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/uart.c | 167 |
14 files changed, 693 insertions, 0 deletions
diff --git a/src/soc/Kconfig b/src/soc/Kconfig index 0412919362..a36beddf5b 100644 --- a/src/soc/Kconfig +++ b/src/soc/Kconfig @@ -1,5 +1,6 @@ source src/soc/intel/Kconfig source src/soc/nvidia/Kconfig source src/soc/qualcomm/Kconfig +source src/soc/rockchip/Kconfig source src/soc/samsung/Kconfig source src/soc/ucb/Kconfig diff --git a/src/soc/Makefile.inc b/src/soc/Makefile.inc index ab3e1662bb..80dd109422 100644 --- a/src/soc/Makefile.inc +++ b/src/soc/Makefile.inc @@ -4,5 +4,6 @@ subdirs-y += intel subdirs-y += nvidia subdirs-y += qualcomm +subdirs-y += rockchip subdirs-y += samsung subdirs-y += ucb diff --git a/src/soc/rockchip/Kconfig b/src/soc/rockchip/Kconfig new file mode 100644 index 0000000000..b041f89f8b --- /dev/null +++ b/src/soc/rockchip/Kconfig @@ -0,0 +1,20 @@ +## +## This file is part of the coreboot project. +## +## Copyright 2014 Rockchip Inc. +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; version 2 of the License. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +source src/soc/rockchip/rk3288/Kconfig diff --git a/src/soc/rockchip/Makefile.inc b/src/soc/rockchip/Makefile.inc new file mode 100644 index 0000000000..aa67f5c1cf --- /dev/null +++ b/src/soc/rockchip/Makefile.inc @@ -0,0 +1,20 @@ +## +## This file is part of the coreboot project. +## +## Copyright 2014 Rockchip Inc. +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; version 2 of the License. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +subdirs-$(CONFIG_SOC_ROCKCHIP_RK3288) += rk3288 diff --git a/src/soc/rockchip/rk3288/Kconfig b/src/soc/rockchip/rk3288/Kconfig new file mode 100644 index 0000000000..51cf74ca65 --- /dev/null +++ b/src/soc/rockchip/rk3288/Kconfig @@ -0,0 +1,118 @@ +## +## This file is part of the coreboot project. +## +## Copyright 2014 Rockchip Inc. +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; version 2 of the License. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +config SOC_ROCKCHIP_RK3288 + bool + default n + select ARCH_BOOTBLOCK_ARMV7 + select ARCH_VERSTAGE_ARMV7 + select ARCH_ROMSTAGE_ARMV7 + select ARCH_RAMSTAGE_ARMV7 + select CPU_HAS_BOOTBLOCK_INIT + select HAVE_MONOTONIC_TIMER + select HAVE_UART_MEMORY_MAPPED + select HAVE_UART_SPECIAL + select BOOTBLOCK_CONSOLE + select DYNAMIC_CBMEM + +if SOC_ROCKCHIP_RK3288 + +config BOOTBLOCK_CPU_INIT + string + default "soc/rockchip/rk3288/bootblock.c" + +# ROM image layout. +# +# 0x00000 Combined bootblock and ID Block +# 0x08000 Master CBFS header. +# 0x18000 Free for CBFS data. +# +# iRAM (96k) layout. +# (Note: The BootROM will jump to 0xff704004 after loading bootblock, +# so the bootblock loading address must be at 0xff704004.) +# +# 0xFF70_0000 TTB (16KB). +# 0xFF70_4004 Bootblock (max 16KB-4B). +# 0xFF70_8000 ROM stage (max 40KB). +# 0xFF71_2000 STACK (4KB). +# 0xFF71_3000 CBFS mapping cache (20K) +# 0xFF71_7FFF End of iRAM. + +config SYS_SDRAM_BASE + hex "SDRAM base address" + default 0x00000000 + +config STACK_TOP + hex "STACK TOP" + default 0xff713000 + +config STACK_BOTTOM + hex "STACK BOTTOM" + default 0xff712000 + +config BOOTBLOCK_BASE + hex + default 0xff704004 + +config ROMSTAGE_BASE + hex "ROM STAGE BASE" + default 0xff708000 + +config RAMSTAGE_BASE + hex "RAMSTAGE BASE" + default 0x00200000 + +config BOOTBLOCK_ROM_OFFSET + hex + default 0x0 + +config CBFS_HEADER_ROM_OFFSET + hex + default 0x0008000 + +config CBFS_ROM_OFFSET + hex + default 0x0018000 + +config CBFS_SRAM_CACHE_ADDRESS + hex "sram memory address to put CBFS cache data" + default 0xff713000 + +config CBFS_SRAM_CACHE_SIZE + hex "size of CBFS cache data" + default 0x00005000 + +config CBFS_DRAM_CACHE_ADDRESS + hex "dram memory address to put CBFS cache data" + default 0x01000000 + +config CBFS_DRAM_CACHE_SIZE + hex "size of CBFS cache data" + default 0x00100000 + +config TTB_BUFFER + hex "memory address of the TTB buffer" + default 0xff700000 + +config CONSOLE_SERIAL_UART_ADDRESS + hex + depends on CONSOLE_SERIAL_UART + default 0xFF690000 + +endif diff --git a/src/soc/rockchip/rk3288/Makefile.inc b/src/soc/rockchip/rk3288/Makefile.inc new file mode 100644 index 0000000000..50a1bbfcf6 --- /dev/null +++ b/src/soc/rockchip/rk3288/Makefile.inc @@ -0,0 +1,39 @@ +## +## This file is part of the coreboot project. +## +## Copyright 2014 Rockchip Inc. +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; version 2 of the License. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +#bootblock-y += bootblock.c +bootblock-y += cbmem.c +bootblock-y += timer.c +bootblock-y += monotonic_timer.c +bootblock-y += media.c +ifeq ($(CONFIG_BOOTBLOCK_CONSOLE),y) +bootblock-$(CONFIG_DRIVERS_UART) += uart.c +endif + +romstage-y += cbmem.c +romstage-y += timer.c +romstage-y += monotonic_timer.c +romstage-y += media.c +romstage-$(CONFIG_DRIVERS_UART) += uart.c + +ramstage-y += cbmem.c +ramstage-y += timer.c +ramstage-y += monotonic_timer.c +ramstage-y += media.c +ramstage-$(CONFIG_DRIVERS_UART) += uart.c diff --git a/src/soc/rockchip/rk3288/addressmap.h b/src/soc/rockchip/rk3288/addressmap.h new file mode 100644 index 0000000000..865e3c2ed1 --- /dev/null +++ b/src/soc/rockchip/rk3288/addressmap.h @@ -0,0 +1,102 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Rockchip Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __SOC_ROCKCHIP_RK3288_ADDRESSMAP_H__ +#define __SOC_ROCKCHIP_RK3288_ADDRESSMAP_H__ + +#define SDMMC1_BASE 0xFF0C0000 +#define SDMMC0_BASE 0xFF0D0000 +#define EMMC_BASE 0xFF0F0000 +#define SARADC_BASE 0xFF100000 + +#define SPI0_BASE 0xFF110000 +#define SPI1_BASE 0xFF120000 +#define SPI2_BASE 0xFF130000 + +#define I2C1_BASE 0xFF140000 +#define I2C3_BASE 0xFF150000 +#define I2C4_BASE 0xFF160000 +#define I2C5_BASE 0xFF170000 +#define UART0_BASE 0xFF180000 +#define UART1_BASE 0xFF190000 +#define DMAC_PERI_BASE 0xFF250000 + +#define NANDC0_BASE 0xFF400000 +#define NANDC1_BASE 0xFF410000 + +#define USB_HOST0_EHCI_BASE 0xFF500000 +#define USB_HOST0_OHCI_BASE 0xFF520000 +#define USB_HOST1_BASE 0xFF540000 +#define USB_OTG_BASE 0xFF580000 + +#define DMAC_BUS_BASE 0xFF600000 + +#define DDR_PCTL0_BASE 0xFF610000 +#define DDR_PCTL1_BASE 0xFF630000 +#define DDR_PUBL0_BASE 0xFF620000 +#define DDR_PUBL1_BASE 0xFF640000 + +#define I2C0_BASE 0xFF650000 +#define I2C2_BASE 0xFF660000 +#define DW_PWM0123_BASE 0xFF670000 +#define RK_PWM0123_BASE 0xFF680000 +#define UART2_BASE 0xFF690000 +#define TIMER0_BASE 0xFF6B0000 + +#define SRAM_BASE 0xFF700000 +#define PMU_BASE 0xFF730000 +#define GRF_SECURE_BASE 0xFF740000 +#define GPIO0_BASE 0xFF750000 +#define CRU_BASE 0xFF760000 +#define GRF_BASE 0xFF770000 +#define GPIO1_BASE 0xFF780000 +#define GPIO2_BASE 0xFF790000 +#define GPIO3_BASE 0xFF7A0000 +#define GPIO4_BASE 0xFF7B0000 +#define GPIO5_BASE 0xFF7C0000 +#define GPIO6_BASE 0xFF7D0000 +#define GPIO7_BASE 0xFF7E0000 +#define GPIO8_BASE 0xFF7F0000 + +#define TIMER6_BASE 0xFF810000 +#define TIMER7_BASE 0xFF810020 + +#define VOP_BIG_BASE 0xFF930000 +#define HDMI_TX_BASE 0xFF980000 +#define DMACS_BUS_BASE 0xFFB20000 + +#define SERVICE_CORE_BASE 0xFFA80000 +#define SERVICE_DMA_BASE 0xFFA90000 +#define SERVICE_GPU_BASE 0xFFAA0000 +#define SERVICE_PERI_BASE 0xFFAB0000 +#define SERVICE_BUS_BASE 0xFFAC0000 +#define SERVICE_VIO_BASE 0xFFAD0000 +#define SERVICE_VPU_BASE 0xFFAE0000 +#define SERVICE_HEVC_BASE 0xFFAF0000 + +#define EFUSE_BASE 0xFFB40000 + +#define CORE_GICD_BASE 0xFFC01000 +#define CORE_GICC_BASE 0xFFC02000 +#define CPU_AXI_BUS_BASE 0xFFE00000 + +#define BOOT_ROM_BASE 0xFFFF0000 +#define BOOT_ROM_CHIP_VER (BOOT_ROM+0x27F0) + +#endif /* __SOC_ROCKCHIP_RK3288_ADDRESSMAP_H__ */ diff --git a/src/soc/rockchip/rk3288/bootblock.c b/src/soc/rockchip/rk3288/bootblock.c new file mode 100644 index 0000000000..9adf6ac242 --- /dev/null +++ b/src/soc/rockchip/rk3288/bootblock.c @@ -0,0 +1,28 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Rockchip Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <arch/cache.h> +#include <bootblock_common.h> +#include "timer.h" + +static void bootblock_cpu_init(void) +{ + rk3288_init_timer(); +} diff --git a/src/soc/rockchip/rk3288/cbmem.c b/src/soc/rockchip/rk3288/cbmem.c new file mode 100644 index 0000000000..b29c87aaa5 --- /dev/null +++ b/src/soc/rockchip/rk3288/cbmem.c @@ -0,0 +1,29 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Rockchip Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stddef.h> +#include <cbmem.h> + +#define FB_SIZE_MB 4 +void *cbmem_top(void) +{ + return (void *)(CONFIG_SYS_SDRAM_BASE + + (CONFIG_DRAM_SIZE_MB - FB_SIZE_MB)*MiB); +} + diff --git a/src/soc/rockchip/rk3288/media.c b/src/soc/rockchip/rk3288/media.c new file mode 100644 index 0000000000..75713eba7c --- /dev/null +++ b/src/soc/rockchip/rk3288/media.c @@ -0,0 +1,27 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Rockchip Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <cbfs.h> +#include <string.h> +#include <console/console.h> + +int init_default_cbfs_media(struct cbfs_media *media) +{ + return 0; +} diff --git a/src/soc/rockchip/rk3288/monotonic_timer.c b/src/soc/rockchip/rk3288/monotonic_timer.c new file mode 100644 index 0000000000..d33ed6858c --- /dev/null +++ b/src/soc/rockchip/rk3288/monotonic_timer.c @@ -0,0 +1,40 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Rockchip Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> +#include <timer.h> +#include <arch/io.h> +#include "addressmap.h" +#include "timer.h" + +static uint64_t timer_raw_value(void) +{ + uint64_t value0; + uint64_t value1; + + value0 = (uint64_t)read32(&timer7_ptr->timer_curr_value0); + value1 = (uint64_t)read32(&timer7_ptr->timer_curr_value1); + value0 = value0 | value1<<32; + return value0; +} + +void timer_monotonic_get(struct mono_time *mt) +{ + mono_time_set_usecs(mt, timer_raw_value() / clocks_per_usec); +} diff --git a/src/soc/rockchip/rk3288/timer.c b/src/soc/rockchip/rk3288/timer.c new file mode 100644 index 0000000000..3a2c34d341 --- /dev/null +++ b/src/soc/rockchip/rk3288/timer.c @@ -0,0 +1,58 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Rockchip Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <timer.h> +#include <delay.h> +#include <arch/io.h> +#include "timer.h" + +void init_timer(void) +{ +} + +void rk3288_init_timer(void) +{ + write32(TIMER_LOAD_VAL, &timer7_ptr->timer_load_count0); + write32(TIMER_LOAD_VAL, &timer7_ptr->timer_load_count1); + write32(1, &timer7_ptr->timer_ctrl_reg); +} + +/* delay x useconds */ +void udelay(unsigned usec) +{ + struct mono_time current, end; + + timer_monotonic_get(¤t); + end = current; + mono_time_add_usecs(&end, usec); + + if (mono_time_after(¤t, &end)) { + printk(BIOS_EMERG, "udelay: 0x%08x is impossibly large\n", + usec); + /* There's not much we can do if usec is too big. Use a long, + * paranoid delay value and hope for the best... */ + end = current; + mono_time_add_usecs(&end, USECS_PER_SEC); + } + + while (mono_time_before(¤t, &end)) + timer_monotonic_get(¤t); +} + diff --git a/src/soc/rockchip/rk3288/timer.h b/src/soc/rockchip/rk3288/timer.h new file mode 100644 index 0000000000..8c72a4f373 --- /dev/null +++ b/src/soc/rockchip/rk3288/timer.h @@ -0,0 +1,43 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Rockchip Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __ROCKCHIP_RK3288_TIMER_H__ +#define __ROCKCHIP_RK3288_TIMER_H__ + +#include "addressmap.h" + +#define SYS_CLK_FREQ 24000000 +static const uint32_t clocks_per_usec = SYS_CLK_FREQ/1000000; + +struct rk3288_timer { + u32 timer_load_count0; + u32 timer_load_count1; + u32 timer_curr_value0; + u32 timer_curr_value1; + u32 timer_ctrl_reg; + u32 timer_int_status; +}; + +static struct rk3288_timer * const timer7_ptr = (void *)TIMER7_BASE; + +#define TIMER_LOAD_VAL 0xffffffff + +void rk3288_init_timer(void); + +#endif /* __ROCKCHIP_RK3288_TIMER_H__ */ diff --git a/src/soc/rockchip/rk3288/uart.c b/src/soc/rockchip/rk3288/uart.c new file mode 100644 index 0000000000..60b14a3209 --- /dev/null +++ b/src/soc/rockchip/rk3288/uart.c @@ -0,0 +1,167 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Rockchip Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/uart.h> +#include <arch/io.h> +#include <boot/coreboot_tables.h> +#include <console/console.h> /* for __console definition */ +#include <stdint.h> +#include <drivers/uart/uart8250reg.h> + +/* + * TODO: Use DRIVERS_UART_8250MEM driver instead. + * There is an issue in the IO call functions where x86 and ARM + * ordering is reversed. This 8250MEM driver uses the x86 convention. + * This driver can be replaced once the IO calls are sorted. + */ + +struct rk3288_uart { + union { + uint32_t thr; /* Transmit holding register. */ + uint32_t rbr; /* Receive buffer register. */ + uint32_t dll; /* Divisor latch lsb. */ + }; + union { + uint32_t ier; /* Interrupt enable register. */ + uint32_t dlm; /* Divisor latch msb. */ + }; + union { + uint32_t iir; /* Interrupt identification register. */ + uint32_t fcr; /* FIFO control register. */ + }; + uint32_t lcr; /* Line control register. */ + uint32_t mcr; /* Modem control register. */ + uint32_t lsr; /* Line status register. */ + uint32_t msr; /* Modem status register. */ + uint32_t scr; + uint32_t reserved1[(0x30 - 0x20) / 4]; + uint32_t srbr[(0x70 - 0x30) / 4]; + uint32_t far; + uint32_t tfr; + uint32_t rfw; + uint32_t usr; + uint32_t tfl; + uint32_t rfl; + uint32_t srr; + uint32_t srts; + uint32_t sbcr; + uint32_t sdmam; + uint32_t sfe; + uint32_t srt; + uint32_t stet; + uint32_t htx; + uint32_t dmasa; + uint32_t reserver2[(0xf4 - 0xac) / 4]; + uint32_t cpr; + uint32_t ucv; + uint32_t ctr; +} __attribute__ ((packed)); + + +static struct rk3288_uart * const uart_ptr = + (void *)CONFIG_CONSOLE_SERIAL_UART_ADDRESS; + +static void rk3288_uart_tx_flush(void); +static int rk3288_uart_tst_byte(void); + +static void rk3288_uart_init(void) +{ + /* FIXME: Use a hardcoded divisor for now. + * uint16_t divisor = (u16) uart_baudrate_divisor(default_baudrate(), + * uart_platform_refclk(), 16) + */ + const unsigned divisor = 13; + const uint8_t line_config = UART8250_LCR_WLS_8; // 8n1 + + rk3288_uart_tx_flush(); + + // Disable interrupts. + writel(0, &uart_ptr->ier); + // Force DTR and RTS to high. + writel(UART8250_MCR_DTR | UART8250_MCR_RTS, &uart_ptr->mcr); + // Set line configuration, access divisor latches. + writel(UART8250_LCR_DLAB | line_config, &uart_ptr->lcr); + // Set the divisor. + writel(divisor & 0xff, &uart_ptr->dll); + writel((divisor >> 8) & 0xff, &uart_ptr->dlm); + // Hide the divisor latches. + writel(line_config, &uart_ptr->lcr); + // Enable FIFOs, and clear receive and transmit. + writel(UART8250_FCR_FIFO_EN | + UART8250_FCR_CLEAR_RCVR | + UART8250_FCR_CLEAR_XMIT, &uart_ptr->fcr); +} + +static void rk3288_uart_tx_byte(unsigned char data) +{ + while (!(readl(&uart_ptr->lsr) & UART8250_LSR_THRE)); + writel(data, &uart_ptr->thr); +} + +static void rk3288_uart_tx_flush(void) +{ + while (!(readl(&uart_ptr->lsr) & UART8250_LSR_TEMT)); +} + +static unsigned char rk3288_uart_rx_byte(void) +{ + if (!rk3288_uart_tst_byte()) + return 0; + return readl(&uart_ptr->rbr); +} + +static int rk3288_uart_tst_byte(void) +{ + return (readl(&uart_ptr->lsr) & UART8250_LSR_DR) == UART8250_LSR_DR; +} + + + +void uart_init(int idx) +{ + rk3288_uart_init(); +} + +unsigned char uart_rx_byte(int idx) +{ + return rk3288_uart_rx_byte(); +} + +void uart_tx_byte(int idx, unsigned char data) +{ + rk3288_uart_tx_byte(data); +} + +void uart_tx_flush(int idx) +{ + rk3288_uart_tx_flush(); +} + +#ifndef __PRE_RAM__ +void uart_fill_lb(void *data) +{ + struct lb_serial serial; + serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED; + serial.baseaddr = CONFIG_CONSOLE_SERIAL_UART_ADDRESS; + serial.baud = default_baudrate(); + lb_add_serial(&serial, data); + + lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data); +} +#endif |