2016-05-25 12:03:04 +01:00
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/*
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* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
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*
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2017-05-03 09:38:09 +01:00
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* SPDX-License-Identifier: BSD-3-Clause
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2016-05-25 12:03:04 +01:00
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*/
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#include <assert.h>
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2019-04-24 19:26:51 +01:00
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#include <errno.h>
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2018-12-14 00:18:21 +00:00
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#include <string.h>
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#include <common/bl_common.h>
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#include <common/debug.h>
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#include <drivers/console.h>
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#include <drivers/gpio.h>
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2019-03-07 07:07:11 +00:00
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#include <libfdt.h>
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2018-12-14 00:18:21 +00:00
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#include <lib/coreboot.h>
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#include <lib/mmio.h>
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#include <plat/common/platform.h>
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2016-05-25 12:03:04 +01:00
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#include <plat_params.h>
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#include <plat_private.h>
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2016-09-09 19:43:15 +01:00
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static struct gpio_info param_reset;
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static struct gpio_info param_poweroff;
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2016-09-09 19:47:53 +01:00
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static struct bl31_apio_param param_apio;
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2016-05-25 12:03:04 +01:00
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static struct gpio_info *rst_gpio;
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static struct gpio_info *poweroff_gpio;
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2016-09-09 19:43:15 +01:00
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static struct gpio_info suspend_gpio[10];
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uint32_t suspend_gpio_cnt;
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2016-09-09 19:47:53 +01:00
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static struct apio_info *suspend_apio;
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2019-04-19 13:16:27 +01:00
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static uint32_t rk_uart_base = PLAT_RK_UART_BASE;
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uint32_t rockchip_get_uart_base(void)
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{
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return rk_uart_base;
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}
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2016-05-25 12:03:04 +01:00
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2019-04-24 19:26:51 +01:00
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#if COREBOOT
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static int dt_process_fdt(void *blob)
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{
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return -ENODEV;
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}
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#else
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2019-03-07 07:07:11 +00:00
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static uint8_t fdt_buffer[0x10000];
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void *plat_get_fdt(void)
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{
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return &fdt_buffer[0];
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}
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2019-04-19 13:16:27 +01:00
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static void plat_rockchip_dt_process_fdt_uart(void *fdt)
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{
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const char *path_name = "/chosen";
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const char *prop_name = "stdout-path";
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int node_offset;
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int stdout_path_len;
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const char *stdout_path;
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char serial_char;
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int serial_no;
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uint32_t uart_base;
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node_offset = fdt_path_offset(fdt, path_name);
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if (node_offset < 0)
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return;
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stdout_path = fdt_getprop(fdt, node_offset, prop_name,
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&stdout_path_len);
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if (stdout_path == NULL)
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return;
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/*
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* We expect something like:
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* "serial0:...""
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*/
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if (strncmp("serial", stdout_path, 6) != 0)
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return;
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serial_char = stdout_path[6];
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serial_no = serial_char - '0';
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switch (serial_no) {
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case 0:
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uart_base = UART0_BASE;
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break;
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case 1:
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uart_base = UART1_BASE;
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break;
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case 2:
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uart_base = UART2_BASE;
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break;
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#ifdef UART3_BASE
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case 3:
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uart_base = UART3_BASE;
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break;
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#endif
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#ifdef UART4_BASE
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case 4:
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uart_base = UART4_BASE;
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break;
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#endif
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default:
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return;
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}
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rk_uart_base = uart_base;
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}
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2019-04-24 19:26:51 +01:00
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static int dt_process_fdt(void *blob)
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{
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void *fdt = plat_get_fdt();
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int ret;
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ret = fdt_open_into(blob, fdt, 0x10000);
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if (ret < 0)
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return ret;
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2019-04-19 13:16:27 +01:00
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plat_rockchip_dt_process_fdt_uart(fdt);
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2019-04-24 19:26:51 +01:00
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return 0;
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}
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#endif
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2016-09-09 19:43:15 +01:00
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struct gpio_info *plat_get_rockchip_gpio_reset(void)
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2016-05-25 12:03:04 +01:00
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{
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return rst_gpio;
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}
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2016-09-09 19:43:15 +01:00
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struct gpio_info *plat_get_rockchip_gpio_poweroff(void)
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2016-05-25 12:03:04 +01:00
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{
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return poweroff_gpio;
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}
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2016-09-09 19:43:15 +01:00
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struct gpio_info *plat_get_rockchip_suspend_gpio(uint32_t *count)
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{
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*count = suspend_gpio_cnt;
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return &suspend_gpio[0];
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}
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2016-09-09 19:47:53 +01:00
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struct apio_info *plat_get_rockchip_suspend_apio(void)
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{
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return suspend_apio;
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}
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2016-05-25 12:03:04 +01:00
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void params_early_setup(void *plat_param_from_bl2)
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{
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struct bl31_plat_param *bl2_param;
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struct bl31_gpio_param *gpio_param;
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2019-03-07 07:07:11 +00:00
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/*
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* Test if this is a FDT passed as a platform-specific parameter
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* block.
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*/
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if (!dt_process_fdt(plat_param_from_bl2))
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return;
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2016-05-25 12:03:04 +01:00
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/* keep plat parameters for later processing if need */
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bl2_param = (struct bl31_plat_param *)plat_param_from_bl2;
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while (bl2_param) {
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switch (bl2_param->type) {
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case PARAM_RESET:
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2016-09-09 19:43:15 +01:00
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gpio_param = (struct bl31_gpio_param *)bl2_param;
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memcpy(¶m_reset, &gpio_param->gpio,
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sizeof(struct gpio_info));
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rst_gpio = ¶m_reset;
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2016-05-25 12:03:04 +01:00
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break;
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case PARAM_POWEROFF:
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2016-09-09 19:43:15 +01:00
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gpio_param = (struct bl31_gpio_param *)bl2_param;
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memcpy(¶m_poweroff, &gpio_param->gpio,
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sizeof(struct gpio_info));
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poweroff_gpio = ¶m_poweroff;
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break;
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case PARAM_SUSPEND_GPIO:
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if (suspend_gpio_cnt >= ARRAY_SIZE(suspend_gpio)) {
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ERROR("exceed support suspend gpio number\n");
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break;
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}
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gpio_param = (struct bl31_gpio_param *)bl2_param;
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memcpy(&suspend_gpio[suspend_gpio_cnt],
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&gpio_param->gpio,
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sizeof(struct gpio_info));
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suspend_gpio_cnt++;
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2016-05-25 12:03:04 +01:00
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break;
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2016-09-09 19:47:53 +01:00
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case PARAM_SUSPEND_APIO:
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memcpy(¶m_apio, bl2_param,
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sizeof(struct bl31_apio_param));
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suspend_apio = ¶m_apio.apio;
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break;
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2017-06-09 23:22:44 +01:00
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#if COREBOOT
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case PARAM_COREBOOT_TABLE:
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coreboot_table_setup((void *)
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((struct bl31_u64_param *)bl2_param)->value);
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break;
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#endif
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2016-05-25 12:03:04 +01:00
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default:
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types: use int-ll64 for both aarch32 and aarch64
Since commit 031dbb122472 ("AArch32: Add essential Arch helpers"),
it is difficult to use consistent format strings for printf() family
between aarch32 and aarch64.
For example, uint64_t is defined as 'unsigned long long' for aarch32
and as 'unsigned long' for aarch64. Likewise, uintptr_t is defined
as 'unsigned int' for aarch32, and as 'unsigned long' for aarch64.
A problem typically arises when you use printf() in common code.
One solution could be, to cast the arguments to a type long enough
for both architectures. For example, if 'val' is uint64_t type,
like this:
printf("val = %llx\n", (unsigned long long)val);
Or, somebody may suggest to use a macro provided by <inttypes.h>,
like this:
printf("val = %" PRIx64 "\n", val);
But, both would make the code ugly.
The solution adopted in Linux kernel is to use the same typedefs for
all architectures. The fixed integer types in the kernel-space have
been unified into int-ll64, like follows:
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef signed short int16_t;
typedef unsigned short uint16_t;
typedef signed int int32_t;
typedef unsigned int uint32_t;
typedef signed long long int64_t;
typedef unsigned long long uint64_t;
[ Linux commit: 0c79a8e29b5fcbcbfd611daf9d500cfad8370fcf ]
This gets along with the codebase shared between 32 bit and 64 bit,
with the data model called ILP32, LP64, respectively.
The width for primitive types is defined as follows:
ILP32 LP64
int 32 32
long 32 64
long long 64 64
pointer 32 64
'long long' is 64 bit for both, so it is used for defining uint64_t.
'long' has the same width as pointer, so for uintptr_t.
We still need an ifdef conditional for (s)size_t.
All 64 bit architectures use "unsigned long" size_t, and most 32 bit
architectures use "unsigned int" size_t. H8/300, S/390 are known as
exceptions; they use "unsigned long" size_t despite their architecture
is 32 bit.
One idea for simplification might be to define size_t as 'unsigned long'
across architectures, then forbid the use of "%z" string format.
However, this would cause a distortion between size_t and sizeof()
operator. We have unknowledge about the native type of sizeof(), so
we need a guess of it anyway. I want the following formula to always
return 1:
__builtin_types_compatible_p(size_t, typeof(sizeof(int)))
Fortunately, ARM is probably a majority case. As far as I know, all
32 bit ARM compilers use "unsigned int" size_t.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-02-02 06:09:36 +00:00
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ERROR("not expected type found %lld\n",
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2016-09-09 19:43:15 +01:00
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bl2_param->type);
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break;
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2016-05-25 12:03:04 +01:00
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}
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bl2_param = bl2_param->next;
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}
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}
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