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-rw-r--r--src/cpu/samsung/exynos5250/alternate_cbfs.c72
-rw-r--r--src/cpu/samsung/exynos5250/alternate_cbfs.h6
-rw-r--r--src/cpu/samsung/exynos5250/power.h3
-rw-r--r--src/cpu/samsung/exynos5420/alternate_cbfs.c79
-rw-r--r--src/cpu/samsung/exynos5420/alternate_cbfs.h6
-rw-r--r--src/cpu/samsung/exynos5420/bootblock.c1
-rw-r--r--src/cpu/samsung/exynos5420/power.h3
-rw-r--r--src/mainboard/google/pit/mainboard.c22
-rw-r--r--src/mainboard/google/pit/romstage.c15
-rw-r--r--src/mainboard/google/snow/mainboard.c30
-rw-r--r--src/mainboard/google/snow/romstage.c19
11 files changed, 209 insertions, 47 deletions
diff --git a/src/cpu/samsung/exynos5250/alternate_cbfs.c b/src/cpu/samsung/exynos5250/alternate_cbfs.c
index 49c9d4c194..59843fb97b 100644
--- a/src/cpu/samsung/exynos5250/alternate_cbfs.c
+++ b/src/cpu/samsung/exynos5250/alternate_cbfs.c
@@ -24,6 +24,8 @@
#include <string.h>
#include <console/console.h>
#include "alternate_cbfs.h"
+#include "cpu.h"
+#include "power.h"
#include "spi.h"
/* This allows USB A-A firmware upload from a compatible host in four parts:
@@ -53,7 +55,7 @@ static int usb_cbfs_open(struct cbfs_media *media)
return 0;
if (!irom_load_usb()) {
- printk(BIOS_ERR, "Unable to load CBFS image via USB!\n");
+ printk(BIOS_EMERG, "Unable to load CBFS image via USB!\n");
return -1;
}
@@ -70,6 +72,45 @@ static int usb_cbfs_open(struct cbfs_media *media)
return 0;
}
+/*
+ * SDMMC works very similar to USB A-A: we copy the CBFS image into memory
+ * and read it from there. While SDMMC would also allow direct block by block
+ * on-demand reading, we might run into problems if we call back into the IROM
+ * in very late boot stages (e.g. after initializing/changing MMC clocks)... so
+ * this seems like a safer approach. It also makes it easy to pass our image
+ * down to payloads.
+ */
+static int sdmmc_cbfs_open(struct cbfs_media *media)
+{
+#ifdef __PRE_RAM__
+ /*
+ * In the bootblock, we just copy the small part that fits in the buffer
+ * and hope that it's enough (since the romstage is currently always the
+ * first component in the image, this should work out). In the romstage,
+ * we copy until our buffer is full (currently 12M) to avoid the pain of
+ * figuring out the true image size from in here. Since this is mainly a
+ * developer/debug boot mode, those shortcomings should be bearable.
+ */
+ const u32 count = alternate_cbfs_size / 512;
+ static int first_run = 1;
+ int (*irom_load_sdmmc)(u32 start, u32 count, void *dst) =
+ *irom_sdmmc_read_blocks_ptr;
+
+ if (!first_run)
+ return 0;
+
+ if (!irom_load_sdmmc(1, count, alternate_cbfs_buffer)) {
+ printk(BIOS_EMERG, "Unable to load CBFS image from SDMMC!\n");
+ return -1;
+ }
+
+ printk(BIOS_DEBUG, "SDMMC read successful, CBFS image should now be"
+ " at %p\n", alternate_cbfs_buffer);
+ first_run = 0;
+#endif
+ return 0;
+}
+
static int alternate_cbfs_close(struct cbfs_media *media) { return 0; }
static size_t alternate_cbfs_read(struct cbfs_media *media, void *dest,
@@ -90,6 +131,19 @@ static void *alternate_cbfs_map(struct cbfs_media *media, size_t offset,
static void *alternate_cbfs_unmap(struct cbfs_media *media,
const void *buffer) { return 0; }
+static int initialize_exynos_sdmmc_cbfs_media(struct cbfs_media *media)
+{
+ printk(BIOS_DEBUG, "Using Exynos alternate boot mode SDMMC\n");
+
+ media->open = sdmmc_cbfs_open;
+ media->close = alternate_cbfs_close;
+ media->read = alternate_cbfs_read;
+ media->map = alternate_cbfs_map;
+ media->unmap = alternate_cbfs_unmap;
+
+ return 0;
+}
+
static int initialize_exynos_usb_cbfs_media(struct cbfs_media *media)
{
printk(BIOS_DEBUG, "Using Exynos alternate boot mode USB A-A\n");
@@ -108,8 +162,16 @@ int init_default_cbfs_media(struct cbfs_media *media)
if (*iram_secondary_base == SECONDARY_BASE_BOOT_USB)
return initialize_exynos_usb_cbfs_media(media);
- /* TODO: implement SDMMC (and possibly other) boot mode */
-
- return initialize_exynos_spi_cbfs_media(media,
- (void*)CONFIG_CBFS_CACHE_ADDRESS, CONFIG_CBFS_CACHE_SIZE);
+ switch (samsung_get_base_power()->om_stat & OM_STAT_MASK) {
+ case OM_STAT_SDMMC:
+ return initialize_exynos_sdmmc_cbfs_media(media);
+ case OM_STAT_SPI:
+ return initialize_exynos_spi_cbfs_media(media,
+ (void*)CONFIG_CBFS_CACHE_ADDRESS,
+ CONFIG_CBFS_CACHE_SIZE);
+ default:
+ printk(BIOS_EMERG, "Exynos OM_STAT value 0x%x not supported!\n",
+ samsung_get_base_power()->om_stat);
+ return 0;
+ }
}
diff --git a/src/cpu/samsung/exynos5250/alternate_cbfs.h b/src/cpu/samsung/exynos5250/alternate_cbfs.h
index a26fe61f87..8a8727964b 100644
--- a/src/cpu/samsung/exynos5250/alternate_cbfs.h
+++ b/src/cpu/samsung/exynos5250/alternate_cbfs.h
@@ -30,6 +30,12 @@ void * * const irom_load_image_from_usb_ptr = (void * *)0x02020070;
#define SECONDARY_BASE_BOOT_USB 0xfeed0002
u32 * const iram_secondary_base = (u32 *)0x02020018;
+/* Values pulled from U-Boot, I think the manual is wrong here (for SPI) */
+#define OM_STAT_SDMMC 0x4
+#define OM_STAT_EMMC 0x8
+#define OM_STAT_SPI 0x14
+#define OM_STAT_MASK 0x7f
+
#if defined(__BOOT_BLOCK__)
/* A small space in IRAM to hold the romstage-only image */
void * const alternate_cbfs_buffer = (void *)CONFIG_CBFS_CACHE_ADDRESS;
diff --git a/src/cpu/samsung/exynos5250/power.h b/src/cpu/samsung/exynos5250/power.h
index f349e53ece..5483d92de4 100644
--- a/src/cpu/samsung/exynos5250/power.h
+++ b/src/cpu/samsung/exynos5250/power.h
@@ -42,7 +42,8 @@ void power_enable_hw_thermal_trip(void);
/* Power Management Unit register map */
struct exynos5_power {
/* Add registers as and when required */
- uint8_t reserved1[0x0400];
+ uint32_t om_stat; /* 0x0000 */
+ uint8_t reserved1[0x03fc];
uint32_t sw_reset; /* 0x0400 */
uint8_t reserved2[0x0304];
uint32_t usb_host_phy_ctrl; /* 0x0708 */
diff --git a/src/cpu/samsung/exynos5420/alternate_cbfs.c b/src/cpu/samsung/exynos5420/alternate_cbfs.c
index 49c9d4c194..416130305a 100644
--- a/src/cpu/samsung/exynos5420/alternate_cbfs.c
+++ b/src/cpu/samsung/exynos5420/alternate_cbfs.c
@@ -22,8 +22,11 @@
#include <cbfs.h> /* This driver serves as a CBFS media source. */
#include <stdlib.h>
#include <string.h>
+#include <arch/cache.h>
#include <console/console.h>
#include "alternate_cbfs.h"
+#include "cpu.h"
+#include "power.h"
#include "spi.h"
/* This allows USB A-A firmware upload from a compatible host in four parts:
@@ -52,10 +55,13 @@ static int usb_cbfs_open(struct cbfs_media *media)
if (!first_run)
return 0;
+ dcache_mmu_disable();
if (!irom_load_usb()) {
- printk(BIOS_ERR, "Unable to load CBFS image via USB!\n");
+ dcache_mmu_enable();
+ printk(BIOS_EMERG, "Unable to load CBFS image via USB!\n");
return -1;
}
+ dcache_mmu_enable();
/*
* We need to trust the host/irom to copy the image to our
@@ -70,6 +76,48 @@ static int usb_cbfs_open(struct cbfs_media *media)
return 0;
}
+/*
+ * SDMMC works very similar to USB A-A: we copy the CBFS image into memory
+ * and read it from there. While SDMMC would also allow direct block by block
+ * on-demand reading, we might run into problems if we call back into the IROM
+ * in very late boot stages (e.g. after initializing/changing MMC clocks)... so
+ * this seems like a safer approach. It also makes it easy to pass our image
+ * down to payloads.
+ */
+static int sdmmc_cbfs_open(struct cbfs_media *media)
+{
+#ifdef __PRE_RAM__
+ /*
+ * In the bootblock, we just copy the small part that fits in the buffer
+ * and hope that it's enough (since the romstage is currently always the
+ * first component in the image, this should work out). In the romstage,
+ * we copy until our buffer is full (currently 12M) to avoid the pain of
+ * figuring out the true image size from in here. Since this is mainly a
+ * developer/debug boot mode, those shortcomings should be bearable.
+ */
+ const u32 count = alternate_cbfs_size / 512;
+ static int first_run = 1;
+ int (*irom_load_sdmmc)(u32 start, u32 count, void *dst) =
+ *irom_sdmmc_read_blocks_ptr;
+
+ if (!first_run)
+ return 0;
+
+ dcache_mmu_disable();
+ if (!irom_load_sdmmc(1, count, alternate_cbfs_buffer)) {
+ dcache_mmu_enable();
+ printk(BIOS_EMERG, "Unable to load CBFS image from SDMMC!\n");
+ return -1;
+ }
+ dcache_mmu_enable();
+
+ printk(BIOS_DEBUG, "SDMMC read successful, CBFS image should now be"
+ " at %p\n", alternate_cbfs_buffer);
+ first_run = 0;
+#endif
+ return 0;
+}
+
static int alternate_cbfs_close(struct cbfs_media *media) { return 0; }
static size_t alternate_cbfs_read(struct cbfs_media *media, void *dest,
@@ -90,6 +138,19 @@ static void *alternate_cbfs_map(struct cbfs_media *media, size_t offset,
static void *alternate_cbfs_unmap(struct cbfs_media *media,
const void *buffer) { return 0; }
+static int initialize_exynos_sdmmc_cbfs_media(struct cbfs_media *media)
+{
+ printk(BIOS_DEBUG, "Using Exynos alternate boot mode SDMMC\n");
+
+ media->open = sdmmc_cbfs_open;
+ media->close = alternate_cbfs_close;
+ media->read = alternate_cbfs_read;
+ media->map = alternate_cbfs_map;
+ media->unmap = alternate_cbfs_unmap;
+
+ return 0;
+}
+
static int initialize_exynos_usb_cbfs_media(struct cbfs_media *media)
{
printk(BIOS_DEBUG, "Using Exynos alternate boot mode USB A-A\n");
@@ -108,8 +169,16 @@ int init_default_cbfs_media(struct cbfs_media *media)
if (*iram_secondary_base == SECONDARY_BASE_BOOT_USB)
return initialize_exynos_usb_cbfs_media(media);
- /* TODO: implement SDMMC (and possibly other) boot mode */
-
- return initialize_exynos_spi_cbfs_media(media,
- (void*)CONFIG_CBFS_CACHE_ADDRESS, CONFIG_CBFS_CACHE_SIZE);
+ switch (samsung_get_base_power()->om_stat & OM_STAT_MASK) {
+ case OM_STAT_SDMMC:
+ return initialize_exynos_sdmmc_cbfs_media(media);
+ case OM_STAT_SPI:
+ return initialize_exynos_spi_cbfs_media(media,
+ (void*)CONFIG_CBFS_CACHE_ADDRESS,
+ CONFIG_CBFS_CACHE_SIZE);
+ default:
+ printk(BIOS_EMERG, "Exynos OM_STAT value 0x%x not supported!\n",
+ samsung_get_base_power()->om_stat);
+ return 0;
+ }
}
diff --git a/src/cpu/samsung/exynos5420/alternate_cbfs.h b/src/cpu/samsung/exynos5420/alternate_cbfs.h
index 4e9dff9f29..3bb9c760f6 100644
--- a/src/cpu/samsung/exynos5420/alternate_cbfs.h
+++ b/src/cpu/samsung/exynos5420/alternate_cbfs.h
@@ -30,6 +30,12 @@ void * * const irom_load_image_from_usb_ptr = (void * *)0x02020070;
#define SECONDARY_BASE_BOOT_USB 0xfeed0002
u32 * const iram_secondary_base = (u32 *)0x02020018;
+/* Values pulled from U-Boot, I think the manual is wrong here (for SPI) */
+#define OM_STAT_SDMMC 0x4
+#define OM_STAT_EMMC 0x8
+#define OM_STAT_SPI 0x14
+#define OM_STAT_MASK 0x7f
+
#if defined(__BOOT_BLOCK__)
/* A small space in IRAM to hold the romstage-only image */
void * const alternate_cbfs_buffer = (void *)CONFIG_CBFS_CACHE_ADDRESS;
diff --git a/src/cpu/samsung/exynos5420/bootblock.c b/src/cpu/samsung/exynos5420/bootblock.c
index 3df51a7421..1ad75ef493 100644
--- a/src/cpu/samsung/exynos5420/bootblock.c
+++ b/src/cpu/samsung/exynos5420/bootblock.c
@@ -63,7 +63,6 @@ void bootblock_cpu_init(void)
mmu_config_range(0, SRAM_START, DCACHE_OFF);
mmu_config_range(SRAM_START, SRAM_SIZE, DCACHE_WRITEBACK);
mmu_config_range(SRAM_END, 4096 - SRAM_END, DCACHE_OFF);
- dcache_invalidate_all();
dcache_mmu_enable();
/* For most ARM systems, we have to initialize firmware media source
diff --git a/src/cpu/samsung/exynos5420/power.h b/src/cpu/samsung/exynos5420/power.h
index 665e94c197..4efc84efb2 100644
--- a/src/cpu/samsung/exynos5420/power.h
+++ b/src/cpu/samsung/exynos5420/power.h
@@ -42,7 +42,8 @@ void power_enable_hw_thermal_trip(void);
/* Power Management Unit register map */
struct exynos5_power {
/* Add registers as and when required */
- uint8_t reserved1[0x0400];
+ uint32_t om_stat; /* 0x0000 */
+ uint8_t reserved1[0x03fc];
uint32_t sw_reset; /* 0x0400 */
uint8_t reserved2[0x0304];
uint32_t usb_host_phy_ctrl; /* 0x0708 */
diff --git a/src/mainboard/google/pit/mainboard.c b/src/mainboard/google/pit/mainboard.c
index 3ffb824216..9aa8d5cd30 100644
--- a/src/mainboard/google/pit/mainboard.c
+++ b/src/mainboard/google/pit/mainboard.c
@@ -330,6 +330,19 @@ static void disable_usb30_pll(void)
gpio_direction_output(usb3_pll_l, 0);
}
+static void setup_storage(void)
+{
+ /* MMC0: Fixed, 8 bit mode, connected with GPIO. */
+ if (clock_set_dwmci(PERIPH_ID_SDMMC0))
+ printk(BIOS_CRIT, "%s: Failed to set MMC0 clock.\n", __func__);
+ exynos_pinmux_sdmmc0();
+
+ /* MMC2: Removable, 4 bit mode, no GPIO. */
+ /* (Must be after romstage to avoid breaking SDMMC boot.) */
+ clock_set_dwmci(PERIPH_ID_SDMMC2);
+ exynos_pinmux_sdmmc2();
+}
+
static void gpio_init(void)
{
/* Set up the I2C busses. */
@@ -370,6 +383,12 @@ static void backlight_vdd(void)
tps65090_thru_ec_fet_set(1);
}
+static void sdmmc_vdd(void)
+{
+ /* Enable FET4, P3.3V_SDCARD */
+ tps65090_thru_ec_fet_set(4);
+}
+
/* this happens after cpu_init where exynos resources are set */
static void mainboard_init(device_t dev)
{
@@ -380,6 +399,7 @@ static void mainboard_init(device_t dev)
void *fb_addr = (void *)(get_fb_base_kb() * KiB);
gpio_init();
+ setup_storage();
tmu_init(&exynos5420_tmu_info);
/* Clock Gating all the unused IP's to save power */
@@ -388,6 +408,8 @@ static void mainboard_init(device_t dev)
/* Disable USB3.0 PLL to save 250mW of power */
disable_usb30_pll();
+ sdmmc_vdd();
+
set_vbe_mode_info_valid(&edid, (uintptr_t)fb_addr);
/*
diff --git a/src/mainboard/google/pit/romstage.c b/src/mainboard/google/pit/romstage.c
index 319ebf97e2..7967a559f2 100644
--- a/src/mainboard/google/pit/romstage.c
+++ b/src/mainboard/google/pit/romstage.c
@@ -40,8 +40,6 @@
#include <drivers/maxim/max77802/max77802.h>
#include <device/i2c.h>
-#define MMC0_GPIO_PIN (58)
-
#define PMIC_I2C_BUS 4
struct pmic_write
@@ -109,18 +107,6 @@ static int setup_power(int is_resume)
return error;
}
-static void setup_storage(void)
-{
- /* MMC0: Fixed, 8 bit mode, connected with GPIO. */
- if (clock_set_dwmci(PERIPH_ID_SDMMC0))
- printk(BIOS_CRIT, "%s: Failed to set MMC0 clock.\n", __func__);
- exynos_pinmux_sdmmc0();
-
- /* MMC2: Removable, 4 bit mode, no GPIO. */
- clock_set_dwmci(PERIPH_ID_SDMMC2);
- exynos_pinmux_sdmmc2();
-}
-
static void setup_ec(void)
{
/* SPI2 (EC) is slower and needs to work in half-duplex mode with
@@ -270,7 +256,6 @@ void main(void)
wakeup();
}
- setup_storage();
setup_gpio();
setup_ec();
diff --git a/src/mainboard/google/snow/mainboard.c b/src/mainboard/google/snow/mainboard.c
index 23b7072592..9fc2fe6d26 100644
--- a/src/mainboard/google/snow/mainboard.c
+++ b/src/mainboard/google/snow/mainboard.c
@@ -38,6 +38,8 @@
#include "exynos5250.h"
+#define MMC0_GPIO_PIN (58)
+
/* convenient shorthand (in MB) */
#define DRAM_START (CONFIG_SYS_SDRAM_BASE >> 20)
#define DRAM_SIZE CONFIG_DRAM_SIZE_MB
@@ -132,6 +134,7 @@ static void backlight_en(void)
#define TPS65090_BUS 4 /* Snow-specific */
#define FET1_CTRL 0x0f
+#define FET4_CTRL 0x12
#define FET6_CTRL 0x14
static void lcd_vdd(void)
@@ -147,6 +150,12 @@ static void backlight_vdd(void)
udelay(LCD_T5_DELAY_MS * 1000);
}
+static void sdmmc_vdd(void)
+{
+ /* Enable FET4, P3.3V_SDCARD */
+ tps65090_fet_enable(TPS65090_BUS, FET4_CTRL);
+}
+
//static struct video_info smdk5250_dp_config = {
static struct video_info dp_video_info = {
/* FIXME: fix video_info struct to use const for name */
@@ -179,6 +188,24 @@ static void disable_usb30_pll(void)
gpio_direction_output(usb3_pll_l, 0);
}
+static void setup_storage(void)
+{
+ /* MMC0: Fixed, 8 bit mode, connected with GPIO. */
+ if (clock_set_mshci(PERIPH_ID_SDMMC0))
+ printk(BIOS_CRIT, "%s: Failed to set MMC0 clock.\n", __func__);
+ if (gpio_direction_output(MMC0_GPIO_PIN, 1)) {
+ printk(BIOS_CRIT, "%s: Unable to power on MMC0.\n", __func__);
+ }
+ gpio_set_pull(MMC0_GPIO_PIN, GPIO_PULL_NONE);
+ gpio_set_drv(MMC0_GPIO_PIN, GPIO_DRV_4X);
+ exynos_pinmux_sdmmc0();
+
+ /* MMC2: Removable, 4 bit mode, no GPIO. */
+ /* (Must be after romstage to avoid breaking SDMMC boot.) */
+ clock_set_mshci(PERIPH_ID_SDMMC2);
+ exynos_pinmux_sdmmc2();
+}
+
static void gpio_init(void)
{
/* Set up the I2C busses. */
@@ -217,6 +244,7 @@ static void mainboard_init(device_t dev)
void *fb_addr = (void *)(get_fb_base_kb() * KiB);
gpio_init();
+ setup_storage();
i2c_init(TPS65090_BUS, I2C_0_SPEED, I2C_SLAVE);
i2c_init(7, I2C_0_SPEED, I2C_SLAVE);
@@ -229,6 +257,8 @@ static void mainboard_init(device_t dev)
/* Disable USB3.0 PLL to save 250mW of power */
disable_usb30_pll();
+ sdmmc_vdd();
+
set_vbe_mode_info_valid(&edid, (uintptr_t)fb_addr);
lcd_vdd();
diff --git a/src/mainboard/google/snow/romstage.c b/src/mainboard/google/snow/romstage.c
index 3a8b5e897d..44074c58bf 100644
--- a/src/mainboard/google/snow/romstage.c
+++ b/src/mainboard/google/snow/romstage.c
@@ -42,7 +42,6 @@
#include "exynos5250.h"
#define PMIC_BUS 0
-#define MMC0_GPIO_PIN (58)
static void setup_power(int is_resume)
{
@@ -96,23 +95,6 @@ static void setup_power(int is_resume)
}
}
-static void setup_storage(void)
-{
- /* MMC0: Fixed, 8 bit mode, connected with GPIO. */
- if (clock_set_mshci(PERIPH_ID_SDMMC0))
- printk(BIOS_CRIT, "%s: Failed to set MMC0 clock.\n", __func__);
- if (gpio_direction_output(MMC0_GPIO_PIN, 1)) {
- printk(BIOS_CRIT, "%s: Unable to power on MMC0.\n", __func__);
- }
- gpio_set_pull(MMC0_GPIO_PIN, GPIO_PULL_NONE);
- gpio_set_drv(MMC0_GPIO_PIN, GPIO_DRV_4X);
- exynos_pinmux_sdmmc0();
-
- /* MMC2: Removable, 4 bit mode, no GPIO. */
- clock_set_mshci(PERIPH_ID_SDMMC2);
- exynos_pinmux_sdmmc2();
-}
-
static void setup_graphics(void)
{
exynos_pinmux_dphpd();
@@ -176,7 +158,6 @@ void main(void)
wakeup();
}
- setup_storage();
setup_gpio();
setup_graphics();
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 08:03:37 +0000