Add and enable TPL on M2 Porter. The TPL must fit into 16 kiB due to the Gen2 BootROM restriction. The TPL is running from MERAM and is capable of performing the initial initialization of PFC, Clock, GPIO, LBSC, DBSC and QSPI NOR. DBSC is responsible for bringing up the DDR DRAM access. The TPL is capable of loading the next stage, U-Boot, from either SPI NOR or UART as a fallback. If either does provide a valid U-Boot uImage, the system stops, which allows the operator to load U-Boot ie. via JTAG and start it manually.

Signed-off-by: Marek Vasut marek.vasut+renesas@gmail.com Cc: Nobuhiro Iwamatsu iwamatsu@nigauri.org --- arch/arm/mach-rmobile/Kconfig.32 | 1 + board/renesas/porter/porter_spl.c | 419 ++++++++++++++++++++++++++++++++++++++ configs/porter_defconfig | 17 ++ include/configs/porter.h | 6 + 4 files changed, 443 insertions(+)

diff --git a/arch/arm/mach-rmobile/Kconfig.32 b/arch/arm/mach-rmobile/Kconfig.32 index a96938c01e..97260dfefb 100644 --- a/arch/arm/mach-rmobile/Kconfig.32 +++ b/arch/arm/mach-rmobile/Kconfig.32 @@ -70,6 +70,7 @@ config TARGET_PORTER bool "Porter board" select DM select DM_SERIAL + select SUPPORT_TPL select SUPPORT_SPL select SPL_DM if SPL

diff --git a/board/renesas/porter/porter_spl.c b/board/renesas/porter/porter_spl.c index eb34469a71..533b0b41e9 100644 --- a/board/renesas/porter/porter_spl.c +++ b/board/renesas/porter/porter_spl.c @@ -21,20 +21,439 @@ #include <spl.h>

#define TMU0_MSTP125 BIT(25) +#define SCIF0_MSTP721 BIT(21) +#define QSPI_MSTP917 BIT(17)

#define SD2CKCR 0xE615026C #define SD_97500KHZ 0x7

+#ifdef CONFIG_TPL_BUILD +struct reg_config { + u16 off; + u32 val; +}; + +static void dbsc_wait(u16 reg) +{ + static const u32 dbsc3_0_base = DBSC3_0_BASE; + static const u32 dbsc3_1_base = DBSC3_0_BASE + 0x10000; + + while (!(readl(dbsc3_0_base + reg) & BIT(0))) + ; + + while (!(readl(dbsc3_1_base + reg) & BIT(0))) + ; +} + +static void tpl_init_sys(void) +{ + u32 r0 = 0; + + writel(0xa5a5a500, 0xe6020004); + writel(0xa5a5a500, 0xe6030004); + + asm volatile( + /* ICIALLU - Invalidate I$ to PoU */ + "mcr 15, 0, %0, cr7, cr5, 0 \n" + /* BPIALL - Invalidate branch predictors */ + "mcr 15, 0, %0, cr7, cr5, 6 \n" + /* Set SCTLR[IZ] */ + "mrc 15, 0, %0, cr1, cr0, 0 \n" + "orr %0, #0x1800 \n" + "mcr 15, 0, %0, cr1, cr0, 0 \n" + "isb sy \n" + :"=r"(r0)); +} + +static void tpl_init_pfc(void) +{ + static const struct reg_config pfc_with_unlock[] = { + { 0x0090, 0x60000000 }, + { 0x0094, 0x60000000 }, + { 0x0098, 0x00800200 }, + { 0x009c, 0x00000000 }, + { 0x0020, 0x00000000 }, + { 0x0024, 0x00000000 }, + { 0x0028, 0x000244c8 }, + { 0x002c, 0x00000000 }, + { 0x0030, 0x00002400 }, + { 0x0034, 0x01520000 }, + { 0x0038, 0x00724003 }, + { 0x003c, 0x00000000 }, + { 0x0040, 0x00000000 }, + { 0x0044, 0x00000000 }, + { 0x0048, 0x00000000 }, + { 0x004c, 0x00000000 }, + { 0x0050, 0x00000000 }, + { 0x0054, 0x00000000 }, + { 0x0058, 0x00000000 }, + { 0x005c, 0x00000000 }, + { 0x0160, 0x00000000 }, + { 0x0004, 0xffffffff }, + { 0x0008, 0x00ec3fff }, + { 0x000c, 0x3bc001e7 }, + { 0x0010, 0x5bffffff }, + { 0x0014, 0x1ffffffb }, + { 0x0018, 0x01bffff0 }, + { 0x001c, 0xcf7fffff }, + { 0x0074, 0x0381fc00 }, + }; + + static const struct reg_config pfc_without_unlock[] = { + { 0x0100, 0xffffffdf }, + { 0x0104, 0xc883c3ff }, + { 0x0108, 0x1201f3c9 }, + { 0x010c, 0x00000000 }, + { 0x0110, 0xffffeb04 }, + { 0x0114, 0xc003ffff }, + { 0x0118, 0x0800000f }, + { 0x011c, 0x00187ff0 }, + }; + + static const u32 pfc_base = 0xe6060000; + + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(pfc_with_unlock); i++) { + writel(~pfc_with_unlock[i].val, pfc_base); + writel(pfc_with_unlock[i].val, + pfc_base | pfc_with_unlock[i].off); + } + + for (i = 0; i < ARRAY_SIZE(pfc_without_unlock); i++) + writel(pfc_without_unlock[i].val, + pfc_base | pfc_without_unlock[i].off); +} + +static void tpl_init_gpio(void) +{ + static const u16 gpio_offs[] = { + 0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x5400, 0x5800 + }; + + static const struct reg_config gpio_set[] = { + { 0x2000, 0x04381000 }, + { 0x5000, 0x00000000 }, + { 0x5800, 0x000e0000 }, + }; + + static const struct reg_config gpio_clr[] = { + { 0x1000, 0x00000000 }, + { 0x2000, 0x04381010 }, + { 0x3000, 0x00000000 }, + { 0x4000, 0x00000000 }, + { 0x5000, 0x00400000 }, + { 0x5400, 0x00000000 }, + { 0x5800, 0x000e0380 }, + }; + + static const u32 gpio_base = 0xe6050000; + + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(gpio_offs); i++) + writel(0, gpio_base | 0x20 | gpio_offs[i]); + + for (i = 0; i < ARRAY_SIZE(gpio_offs); i++) + writel(0, gpio_base | 0x00 | gpio_offs[i]); + + for (i = 0; i < ARRAY_SIZE(gpio_set); i++) + writel(gpio_set[i].val, gpio_base | 0x08 | gpio_set[i].off); + + for (i = 0; i < ARRAY_SIZE(gpio_clr); i++) + writel(gpio_clr[i].val, gpio_base | 0x04 | gpio_clr[i].off); +} + +static void tpl_init_lbsc(void) +{ + static const struct reg_config lbsc_config[] = { + { 0x00, 0x00000020 }, + { 0x08, 0x00002020 }, + { 0x10, 0x2a103320 }, + { 0x18, 0xff70ff70 }, + }; + + static const u16 lbsc_offs[] = { + 0x80, 0x84, 0x88, 0x8c, 0xa0, 0xc0, 0xc4, 0xc8, 0x180 + }; + + static const u32 lbsc_base = 0xfec00200; + + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(lbsc_config); i++) { + writel(lbsc_config[i].val, + lbsc_base | lbsc_config[i].off); + writel(lbsc_config[i].val, + lbsc_base | (lbsc_config[i].off + 4)); + } + + for (i = 0; i < ARRAY_SIZE(lbsc_offs); i++) + writel(0, lbsc_base | lbsc_offs[i]); +} + +static void tpl_init_dbsc(void) +{ + static const struct reg_config dbsc_config1[] = { + { 0x0280, 0x0000a55a }, + { 0x4000, 0x0000a55a }, + { 0x4008, 0x00000001 }, + { 0x0018, 0x21000000 }, + { 0x0018, 0x11000000 }, + { 0x0018, 0x10000000 }, + { 0x0290, 0x00000001 }, + { 0x02a0, 0x80000000 }, + { 0x0290, 0x00000004 }, + }; + + static const struct reg_config dbsc_config2[] = { + { 0x0290, 0x00000006 }, + { 0x02a0, 0x0001c000 }, + }; + + static const struct reg_config dbsc_config3r0d0[] = { + { 0x0290, 0x0000000f }, + { 0x02a0, 0x00181885 }, + { 0x0290, 0x00000070 }, + { 0x02a0, 0x7c000887 }, + { 0x0290, 0x00000080 }, + { 0x02a0, 0x7c000887 }, + { 0x0290, 0x00000090 }, + { 0x02a0, 0x7c000887 }, + { 0x0290, 0x000000a0 }, + { 0x02a0, 0x7c000887 }, + { 0x0290, 0x000000b0 }, + { 0x02a0, 0x7c000880 }, + { 0x0290, 0x000000c0 }, + { 0x02a0, 0x7c000880 }, + { 0x0290, 0x000000d0 }, + { 0x02a0, 0x7c000880 }, + { 0x0290, 0x000000e0 }, + { 0x02a0, 0x7c000880 }, + }; + static const struct reg_config dbsc_config3r0d1[] = { + { 0x0290, 0x0000000f }, + { 0x02a0, 0x00181885 }, + { 0x0290, 0x00000070 }, + { 0x02a0, 0x7c000887 }, + { 0x0290, 0x00000080 }, + { 0x02a0, 0x7c000887 }, + { 0x0290, 0x00000090 }, + { 0x02a0, 0x7c000887 }, + { 0x0290, 0x000000a0 }, + { 0x02a0, 0x7c000887 }, + }; + + static const struct reg_config dbsc_config3r2[] = { + { 0x0290, 0x0000000f }, + { 0x02a0, 0x00181224 }, + }; + + static const struct reg_config dbsc_config4[] = { + { 0x0290, 0x00000010 }, + { 0x02a0, 0xf004649b }, + { 0x0290, 0x00000061 }, + { 0x02a0, 0x0000006d }, + { 0x0290, 0x00000001 }, + { 0x02a0, 0x00000073 }, + { 0x0020, 0x00000007 }, + { 0x0024, 0x0f030a02 }, + { 0x0030, 0x00000001 }, + { 0x00b0, 0x00000000 }, + { 0x0040, 0x0000000b }, + { 0x0044, 0x00000008 }, + { 0x0048, 0x00000000 }, + { 0x0050, 0x0000000b }, + { 0x0054, 0x000c000b }, + { 0x0058, 0x00000027 }, + { 0x005c, 0x0000001c }, + { 0x0060, 0x00000006 }, + { 0x0064, 0x00000020 }, + { 0x0068, 0x00000008 }, + { 0x006c, 0x0000000c }, + { 0x0070, 0x00000009 }, + { 0x0074, 0x00000012 }, + { 0x0078, 0x000000d0 }, + { 0x007c, 0x00140005 }, + { 0x0080, 0x00050004 }, + { 0x0084, 0x70233005 }, + { 0x0088, 0x000c0000 }, + { 0x008c, 0x00000200 }, + { 0x0090, 0x00000040 }, + { 0x0100, 0x00000001 }, + { 0x00c0, 0x00020001 }, + { 0x00c8, 0x20042004 }, + { 0x0380, 0x00020002 }, + { 0x0390, 0x0000001f }, + }; + + static const struct reg_config dbsc_config5[] = { + { 0x0244, 0x00000011 }, + { 0x0290, 0x00000003 }, + { 0x02a0, 0x0300c561 }, + { 0x0290, 0x00000023 }, + { 0x02a0, 0x00fcdb60 }, + { 0x0290, 0x00000011 }, + { 0x02a0, 0x1000040b }, + { 0x0290, 0x00000012 }, + { 0x02a0, 0x9d9cbb66 }, + { 0x0290, 0x00000013 }, + { 0x02a0, 0x1a868400 }, + { 0x0290, 0x00000014 }, + { 0x02a0, 0x300214d8 }, + { 0x0290, 0x00000015 }, + { 0x02a0, 0x00000d70 }, + { 0x0290, 0x00000016 }, + { 0x02a0, 0x00000006 }, + { 0x0290, 0x00000017 }, + { 0x02a0, 0x00000018 }, + { 0x0290, 0x0000001a }, + { 0x02a0, 0x910035c7 }, + { 0x0290, 0x00000004 }, + }; + + static const struct reg_config dbsc_config6[] = { + { 0x0290, 0x00000001 }, + { 0x02a0, 0x00000181 }, + { 0x0018, 0x11000000 }, + { 0x0290, 0x00000004 }, + }; + + static const struct reg_config dbsc_config7[] = { + { 0x0290, 0x00000001 }, + { 0x02a0, 0x0000fe01 }, + { 0x0304, 0x00000000 }, + { 0x00f4, 0x01004c20 }, + { 0x00f8, 0x014a00b9 }, + { 0x00e0, 0x00000140 }, + { 0x00e4, 0x00081860 }, + { 0x00e8, 0x00010000 }, + { 0x0290, 0x00000004 }, + }; + + static const struct reg_config dbsc_config8[] = { + { 0x0014, 0x00000001 }, + { 0x0290, 0x00000010 }, + { 0x02a0, 0xf00464db }, + { 0x4008, 0x00000000 }, + { 0x4000, 0x00000000 }, + { 0x0010, 0x00000001 }, + { 0x0280, 0x00000000 }, + }; + + static const u32 dbsc3_0_base = DBSC3_0_BASE; + static const u32 dbsc3_1_base = DBSC3_0_BASE + 0x10000; + static const u32 prr_base = 0xff000044; + const u16 prr_rev = readl(prr_base) & 0x7fff; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(dbsc_config1); i++) { + writel(dbsc_config1[i].val, dbsc3_0_base | dbsc_config1[i].off); + writel(dbsc_config1[i].val, dbsc3_1_base | dbsc_config1[i].off); + } + + dbsc_wait(0x2a0); + + for (i = 0; i < ARRAY_SIZE(dbsc_config2); i++) { + writel(dbsc_config2[i].val, dbsc3_0_base | dbsc_config2[i].off); + writel(dbsc_config2[i].val, dbsc3_1_base | dbsc_config2[i].off); + } + + if (prr_rev == 0x4700) { + for (i = 0; i < ARRAY_SIZE(dbsc_config3r0d0); i++) { + writel(dbsc_config3r0d0[i].val, + dbsc3_0_base | dbsc_config3r0d0[i].off); + } + for (i = 0; i < ARRAY_SIZE(dbsc_config3r0d1); i++) { + writel(dbsc_config3r0d1[i].val, + dbsc3_1_base | dbsc_config3r0d1[i].off); + } + } else if (prr_rev != 0x4710) { + for (i = 0; i < ARRAY_SIZE(dbsc_config3r2); i++) { + writel(dbsc_config3r2[i].val, + dbsc3_0_base | dbsc_config3r2[i].off); + writel(dbsc_config3r2[i].val, + dbsc3_1_base | dbsc_config3r2[i].off); + } + } + + for (i = 0; i < ARRAY_SIZE(dbsc_config4); i++) { + writel(dbsc_config4[i].val, dbsc3_0_base | dbsc_config4[i].off); + writel(dbsc_config4[i].val, dbsc3_1_base | dbsc_config4[i].off); + } + + dbsc_wait(0x240); + + for (i = 0; i < ARRAY_SIZE(dbsc_config5); i++) { + writel(dbsc_config5[i].val, dbsc3_0_base | dbsc_config5[i].off); + writel(dbsc_config5[i].val, dbsc3_1_base | dbsc_config5[i].off); + } + + dbsc_wait(0x2a0); + + for (i = 0; i < ARRAY_SIZE(dbsc_config6); i++) { + writel(dbsc_config6[i].val, dbsc3_0_base | dbsc_config6[i].off); + writel(dbsc_config6[i].val, dbsc3_1_base | dbsc_config6[i].off); + } + + dbsc_wait(0x2a0); + + for (i = 0; i < ARRAY_SIZE(dbsc_config7); i++) { + writel(dbsc_config7[i].val, dbsc3_0_base | dbsc_config7[i].off); + writel(dbsc_config7[i].val, dbsc3_1_base | dbsc_config7[i].off); + } + + dbsc_wait(0x2a0); + + for (i = 0; i < ARRAY_SIZE(dbsc_config8); i++) { + writel(dbsc_config8[i].val, dbsc3_0_base | dbsc_config8[i].off); + writel(dbsc_config8[i].val, dbsc3_1_base | dbsc_config8[i].off); + } + +} + +static void tpl_init_qspi(void) +{ + mstp_clrbits_le32(MSTPSR9, SMSTPCR9, QSPI_MSTP917); + + static const u32 qspi_base = 0xe6b10000; + + writeb(0x08, qspi_base + 0x00); + writeb(0x00, qspi_base + 0x01); + writeb(0x06, qspi_base + 0x02); + writeb(0x01, qspi_base + 0x0a); + writeb(0x00, qspi_base + 0x0b); + writeb(0x00, qspi_base + 0x0c); + writeb(0x00, qspi_base + 0x0d); + writeb(0x00, qspi_base + 0x0e); + + writew(0xe080, qspi_base + 0x10); + + writeb(0xc0, qspi_base + 0x18); + writeb(0x00, qspi_base + 0x18); + writeb(0x00, qspi_base + 0x08); + writeb(0x48, qspi_base + 0x00); +} + void board_init_f(ulong dummy) { mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125); + mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF0_MSTP721);

/* * SD0 clock is set to 97.5MHz by default. * Set SD2 to the 97.5MHz as well. */ writel(SD_97500KHZ, SD2CKCR); + + tpl_init_sys(); + tpl_init_pfc(); + tpl_init_gpio(); + tpl_init_lbsc(); + tpl_init_dbsc(); + tpl_init_qspi(); } +#endif

void spl_board_init(void) { diff --git a/configs/porter_defconfig b/configs/porter_defconfig index 72a3108b00..a0e44df5f8 100644 --- a/configs/porter_defconfig +++ b/configs/porter_defconfig @@ -7,18 +7,33 @@ CONFIG_SPL_LIBGENERIC_SUPPORT=y CONFIG_SYS_MALLOC_F_LEN=0x8000 CONFIG_R8A7791=y CONFIG_TARGET_PORTER=y +CONFIG_TPL_TEXT_BASE=0xe6300000 +CONFIG_TPL_MAX_SIZE=16384 CONFIG_SPL_SERIAL_SUPPORT=y +CONFIG_TPL_LIBCOMMON_SUPPORT=y +CONFIG_TPL_LIBGENERIC_SUPPORT=y CONFIG_SPL_SPI_FLASH_SUPPORT=y CONFIG_SPL_SPI_SUPPORT=y CONFIG_SPL=y CONFIG_DEFAULT_DEVICE_TREE="r8a7791-porter-u-boot" +CONFIG_TPL_SYS_MALLOC_F_LEN=0x2000 CONFIG_FIT=y CONFIG_BOOTDELAY=3 CONFIG_VERSION_VARIABLE=y CONFIG_SPL_BOARD_INIT=y +CONFIG_SPL_SYS_MALLOC_SIMPLE=y +CONFIG_TPL_SYS_MALLOC_SIMPLE=y CONFIG_SPL_I2C_SUPPORT=y CONFIG_SPL_SPI_LOAD=y CONFIG_SPL_YMODEM_SUPPORT=y +CONFIG_TPL=y +CONFIG_TPL_BOARD_INIT=y +CONFIG_TPL_NEEDS_SEPARATE_TEXT_BASE=y +CONFIG_TPL_SERIAL_SUPPORT=y +CONFIG_TPL_SPI_FLASH_SUPPORT=y +CONFIG_TPL_SPI_LOAD=y +CONFIG_TPL_SPI_SUPPORT=y +CONFIG_TPL_YMODEM_SUPPORT=y CONFIG_CMD_BOOTZ=y # CONFIG_CMD_IMI is not set # CONFIG_CMD_XIMG is not set @@ -71,6 +86,7 @@ CONFIG_PINCTRL_PFC=y CONFIG_DM_REGULATOR=y CONFIG_DM_REGULATOR_FIXED=y CONFIG_DM_REGULATOR_GPIO=y +# CONFIG_TPL_DM_SERIAL is not set CONFIG_SCIF_CONSOLE=y CONFIG_SH_QSPI=y CONFIG_USB=y @@ -78,3 +94,4 @@ CONFIG_DM_USB=y CONFIG_USB_EHCI_HCD=y CONFIG_USB_EHCI_PCI=y CONFIG_USB_STORAGE=y +CONFIG_TPL_TINY_MEMSET=y diff --git a/include/configs/porter.h b/include/configs/porter.h index 48f433486c..7c46b55d8f 100644 --- a/include/configs/porter.h +++ b/include/configs/porter.h @@ -59,4 +59,10 @@ #define CONFIG_SPL_MAX_SIZE 0x40000 #define CONFIG_SYS_SPI_U_BOOT_OFFS 0x140000

+/* TPL support */ +#ifdef CONFIG_TPL_BUILD +#define CONFIG_CONS_SCIF0 +#define CONFIG_SH_SCIF_CLK_FREQ 65000000 +#endif + #endif /* __PORTER_H */