u-boot/arch/arm/mach-rockchip/rk3288-board-spl.c
Sjoerd Simons d76a0119c7 Revert "rockchip: Reconfigure the malloc based to point to system memory"
This patch was merged shortly before the v2015.10 as a minimal fix for
booting on rockchip. Now that the patch series from Hans to do the
relocation in generic code has been merged it can be dropped.

This reverts commit b1f492ca9e.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Acked-by: Simon Glass <sjg@chromium.org>
2015-12-01 08:07:22 -07:00

270 lines
5.3 KiB
C

/*
* (C) Copyright 2015 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <debug_uart.h>
#include <dm.h>
#include <fdtdec.h>
#include <led.h>
#include <malloc.h>
#include <ram.h>
#include <spl.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/hardware.h>
#include <asm/arch/periph.h>
#include <asm/arch/sdram.h>
#include <asm/arch/timer.h>
#include <dm/pinctrl.h>
#include <dm/root.h>
#include <dm/test.h>
#include <dm/util.h>
#include <power/regulator.h>
DECLARE_GLOBAL_DATA_PTR;
u32 spl_boot_device(void)
{
const void *blob = gd->fdt_blob;
struct udevice *dev;
const char *bootdev;
int node;
int ret;
bootdev = fdtdec_get_config_string(blob, "u-boot,boot0");
debug("Boot device %s\n", bootdev);
if (!bootdev)
goto fallback;
node = fdt_path_offset(blob, bootdev);
if (node < 0) {
debug("node=%d\n", node);
goto fallback;
}
ret = device_get_global_by_of_offset(node, &dev);
if (ret) {
debug("device at node %s/%d not found: %d\n", bootdev, node,
ret);
goto fallback;
}
debug("Found device %s\n", dev->name);
switch (device_get_uclass_id(dev)) {
case UCLASS_SPI_FLASH:
return BOOT_DEVICE_SPI;
case UCLASS_MMC:
return BOOT_DEVICE_MMC1;
default:
debug("Booting from device uclass '%s' not supported\n",
dev_get_uclass_name(dev));
}
fallback:
return BOOT_DEVICE_MMC1;
}
u32 spl_boot_mode(void)
{
return MMCSD_MODE_RAW;
}
/* read L2 control register (L2CTLR) */
static inline uint32_t read_l2ctlr(void)
{
uint32_t val = 0;
asm volatile ("mrc p15, 1, %0, c9, c0, 2" : "=r" (val));
return val;
}
/* write L2 control register (L2CTLR) */
static inline void write_l2ctlr(uint32_t val)
{
/*
* Note: L2CTLR can only be written when the L2 memory system
* is idle, ie before the MMU is enabled.
*/
asm volatile("mcr p15, 1, %0, c9, c0, 2" : : "r" (val) : "memory");
isb();
}
static void configure_l2ctlr(void)
{
uint32_t l2ctlr;
l2ctlr = read_l2ctlr();
l2ctlr &= 0xfffc0000; /* clear bit0~bit17 */
/*
* Data RAM write latency: 2 cycles
* Data RAM read latency: 2 cycles
* Data RAM setup latency: 1 cycle
* Tag RAM write latency: 1 cycle
* Tag RAM read latency: 1 cycle
* Tag RAM setup latency: 1 cycle
*/
l2ctlr |= (1 << 3 | 1 << 0);
write_l2ctlr(l2ctlr);
}
static int configure_emmc(struct udevice *pinctrl)
{
struct gpio_desc desc;
int ret;
pinctrl_request_noflags(pinctrl, PERIPH_ID_EMMC);
/*
* TODO(sjg@chromium.org): Pick this up from device tree or perhaps
* use the EMMC_PWREN setting.
*/
ret = dm_gpio_lookup_name("D9", &desc);
if (ret) {
debug("gpio ret=%d\n", ret);
return ret;
}
ret = dm_gpio_request(&desc, "emmc_pwren");
if (ret) {
debug("gpio_request ret=%d\n", ret);
return ret;
}
ret = dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
if (ret) {
debug("gpio dir ret=%d\n", ret);
return ret;
}
ret = dm_gpio_set_value(&desc, 1);
if (ret) {
debug("gpio value ret=%d\n", ret);
return ret;
}
return 0;
}
void board_init_f(ulong dummy)
{
struct udevice *pinctrl;
struct udevice *dev;
int ret;
/* Example code showing how to enable the debug UART on RK3288 */
#ifdef EARLY_UART
#include <asm/arch/grf_rk3288.h>
/* Enable early UART on the RK3288 */
#define GRF_BASE 0xff770000
struct rk3288_grf * const grf = (void *)GRF_BASE;
rk_clrsetreg(&grf->gpio7ch_iomux, GPIO7C7_MASK << GPIO7C7_SHIFT |
GPIO7C6_MASK << GPIO7C6_SHIFT,
GPIO7C7_UART2DBG_SOUT << GPIO7C7_SHIFT |
GPIO7C6_UART2DBG_SIN << GPIO7C6_SHIFT);
/*
* Debug UART can be used from here if required:
*
* debug_uart_init();
* printch('a');
* printhex8(0x1234);
* printascii("string");
*/
debug_uart_init();
#endif
ret = spl_init();
if (ret) {
debug("spl_init() failed: %d\n", ret);
hang();
}
rockchip_timer_init();
configure_l2ctlr();
ret = uclass_get_device(UCLASS_CLK, 0, &dev);
if (ret) {
debug("CLK init failed: %d\n", ret);
return;
}
ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
if (ret) {
debug("Pinctrl init failed: %d\n", ret);
return;
}
ret = uclass_get_device(UCLASS_RAM, 0, &dev);
if (ret) {
debug("DRAM init failed: %d\n", ret);
return;
}
}
static int setup_led(void)
{
#ifdef CONFIG_SPL_LED
struct udevice *dev;
char *led_name;
int ret;
led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led");
if (!led_name)
return 0;
ret = led_get_by_label(led_name, &dev);
if (ret) {
debug("%s: get=%d\n", __func__, ret);
return ret;
}
ret = led_set_on(dev, 1);
if (ret)
return ret;
#endif
return 0;
}
void spl_board_init(void)
{
struct udevice *pinctrl;
int ret;
ret = setup_led();
if (ret) {
debug("LED ret=%d\n", ret);
hang();
}
ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
if (ret) {
debug("%s: Cannot find pinctrl device\n", __func__);
goto err;
}
ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD);
if (ret) {
debug("%s: Failed to set up SD card\n", __func__);
goto err;
}
ret = configure_emmc(pinctrl);
if (ret) {
debug("%s: Failed to set up eMMC\n", __func__);
goto err;
}
/* Enable debug UART */
ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
if (ret) {
debug("%s: Failed to set up console UART\n", __func__);
goto err;
}
preloader_console_init();
return;
err:
printf("spl_board_init: Error %d\n", ret);
/* No way to report error here */
hang();
}