[PATCH v3 08/10] mach-sunxi: Add support for SUNIV architecture

Jesse Taube
2022-01-29T15:24:41Z

Add support for the suniv architecture, which is newer ARM9 SoCs by
Allwinner. The design of it seems to be a mixture of sun3i, sun4i and
sun6i.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
---
V1->V2:
* Remove change in s_init (sunxi: remove lowlevel_init)
V2->V3:
* Covert to if(IS_ENABLED) from ifdef
* Remove busy loop
* Remove depends on for SPL_SPI_SUNXI
---
arch/arm/mach-sunxi/Kconfig | 14 ++++-
arch/arm/mach-sunxi/board.c | 28 +++++++++-
arch/arm/mach-sunxi/clock.c | 3 +-
arch/arm/mach-sunxi/clock_sun6i.c | 89 +++++++++++++++++++++----------
arch/arm/mach-sunxi/cpu_info.c | 2 +
5 files changed, 104 insertions(+), 32 deletions(-)

diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 4e49ad4f0c..11f295033f 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -1,7 +1,8 @@
if ARCH_SUNXI

config SPL_LDSCRIPT
- default "arch/arm/cpu/armv7/sunxi/u-boot-spl.lds" if !ARM64
+ default "arch/arm/cpu/arm926ejs/sunxi/u-boot-spl.lds" if MACH_SUNIV
+ default "arch/arm/cpu/armv7/sunxi/u-boot-spl.lds" if !ARM64 && !MACH_SUNIV

config IDENT_STRING
default " Allwinner Technology"
@@ -183,6 +184,12 @@ choice
prompt "Sunxi SoC Variant"
optional

+config MACH_SUNIV
+ bool "suniv (Allwinner F1C100s/F1C200s/F1C600/R6)"
+ select CPU_ARM926EJS
+ select SUNXI_GEN_SUN6I
+ select SUPPORT_SPL
+
config MACH_SUN4I
bool "sun4i (Allwinner A10)"
select CPU_V7A
@@ -585,6 +592,7 @@ config DRAM_ODT_CORRECTION
endif

config SYS_CLK_FREQ
+ default 408000000 if MACH_SUNIV
default 1008000000 if MACH_SUN4I
default 1008000000 if MACH_SUN5I
default 1008000000 if MACH_SUN6I
@@ -596,6 +604,7 @@ config SYS_CLK_FREQ
default 1008000000 if MACH_SUN50I_H616

config SYS_CONFIG_NAME
+ default "suniv" if MACH_SUNIV
default "sun4i" if MACH_SUN4I
default "sun5i" if MACH_SUN5I
default "sun6i" if MACH_SUN6I
@@ -803,7 +812,7 @@ config VIDEO_SUNXI

config VIDEO_HDMI
bool "HDMI output support"
- depends on VIDEO_SUNXI && !MACH_SUN8I
+ depends on VIDEO_SUNXI && !MACH_SUN8I && !MACH_SUNIV
default y
---help---
Say Y here to add support for outputting video over HDMI.
@@ -1003,6 +1012,7 @@ config GMAC_TX_DELAY
Set the GMAC Transmit Clock Delay Chain value.

config SPL_STACK_R_ADDR
+ default 0x81e00000 if MACH_SUNIV
default 0x4fe00000 if MACH_SUN4I
default 0x4fe00000 if MACH_SUN5I
default 0x4fe00000 if MACH_SUN6I
diff --git a/arch/arm/mach-sunxi/board.c b/arch/arm/mach-sunxi/board.c
index a60dc6b299..2aa30c62c5 100644
--- a/arch/arm/mach-sunxi/board.c
+++ b/arch/arm/mach-sunxi/board.c
@@ -87,7 +87,8 @@ static int gpio_init(void)
sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUNXI_GPIO_INPUT);
sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUNXI_GPIO_INPUT);
#endif
-#if defined(CONFIG_MACH_SUN8I) && !defined(CONFIG_MACH_SUN8I_R40)
+#if (defined(CONFIG_MACH_SUN8I) && !defined(CONFIG_MACH_SUN8I_R40)) || \
+ defined(CONFIG_MACH_SUNIV)
sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUN8I_GPF_UART0);
sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUN8I_GPF_UART0);
#else
@@ -95,6 +96,10 @@ static int gpio_init(void)
sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUNXI_GPF_UART0);
#endif
sunxi_gpio_set_pull(SUNXI_GPF(4), 1);
+#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUNIV)
+ sunxi_gpio_set_cfgpin(SUNXI_GPE(0), SUNIV_GPE_UART0);
+ sunxi_gpio_set_cfgpin(SUNXI_GPE(1), SUNIV_GPE_UART0);
+ sunxi_gpio_set_pull(SUNXI_GPE(1), SUNXI_GPIO_PULL_UP);
#elif CONFIG_CONS_INDEX == 1 && (defined(CONFIG_MACH_SUN4I) || \
defined(CONFIG_MACH_SUN7I) || \
defined(CONFIG_MACH_SUN8I_R40))
@@ -271,10 +276,31 @@ unsigned long spl_mmc_get_uboot_raw_sector(struct mmc *mmc,
return sector;
}

+#ifndef CONFIG_MACH_SUNIV
u32 spl_boot_device(void)
{
return sunxi_get_boot_device();
}
+#else
+/*
+ * suniv BROM do not pass the boot media type to SPL, so we try with the
+ * boot sequence in BROM: mmc0->spinor->fail.
+ */
+void board_boot_order(u32 *spl_boot_list)
+{
+ /*
+ * See the comments above in sunxi_get_boot_device() for information
+ * about FEL boot.
+ */
+ if (!is_boot0_magic(SPL_ADDR + 4)) {
+ spl_boot_list[0] = BOOT_DEVICE_BOARD;
+ return;
+ }
+
+ spl_boot_list[0] = BOOT_DEVICE_MMC1;
+ spl_boot_list[1] = BOOT_DEVICE_SPI;
+}
+#endif

__weak void sunxi_sram_init(void)
{
diff --git a/arch/arm/mach-sunxi/clock.c b/arch/arm/mach-sunxi/clock.c
index de7e875298..da3a0eb058 100644
--- a/arch/arm/mach-sunxi/clock.c
+++ b/arch/arm/mach-sunxi/clock.c
@@ -35,7 +35,8 @@ int clock_init(void)
}

/* These functions are shared between various SoCs so put them here. */
-#if defined CONFIG_SUNXI_GEN_SUN6I && !defined CONFIG_MACH_SUN9I
+#if defined CONFIG_SUNXI_GEN_SUN6I && !defined CONFIG_MACH_SUN9I && \
+ !defined CONFIG_MACH_SUNIV
int clock_twi_onoff(int port, int state)
{
struct sunxi_ccm_reg *const ccm =
diff --git a/arch/arm/mach-sunxi/clock_sun6i.c b/arch/arm/mach-sunxi/clock_sun6i.c
index 8e84062bd7..56681fb2b6 100644
--- a/arch/arm/mach-sunxi/clock_sun6i.c
+++ b/arch/arm/mach-sunxi/clock_sun6i.c
@@ -23,7 +23,8 @@ void clock_init_safe(void)
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;

-#if !defined(CONFIG_MACH_SUNXI_H3_H5) && !defined(CONFIG_MACH_SUN50I)
+#if !defined(CONFIG_MACH_SUNXI_H3_H5) && !defined(CONFIG_MACH_SUN50I) && \
+ !defined(CONFIG_MACH_SUNIV)
struct sunxi_prcm_reg * const prcm =
(struct sunxi_prcm_reg *)SUNXI_PRCM_BASE;

@@ -49,9 +50,11 @@ void clock_init_safe(void)

writel(AHB1_ABP1_DIV_DEFAULT, &ccm->ahb1_apb1_div);

- writel(MBUS_CLK_DEFAULT, &ccm->mbus0_clk_cfg);
- if (IS_ENABLED(CONFIG_MACH_SUN6I))
- writel(MBUS_CLK_DEFAULT, &ccm->mbus1_clk_cfg);
+ if (!IS_ENABLED(CONFIG_MACH_SUNIV)) {
+ writel(MBUS_CLK_DEFAULT, &ccm->mbus0_clk_cfg);
+ if (IS_ENABLED(CONFIG_MACH_SUN6I))
+ writel(MBUS_CLK_DEFAULT, &ccm->mbus1_clk_cfg);
+ }

#if defined(CONFIG_MACH_SUN8I_R40) && defined(CONFIG_SUNXI_AHCI)
setbits_le32(&ccm->sata_pll_cfg, CCM_SATA_PLL_DEFAULT);
@@ -87,21 +90,38 @@ void clock_init_uart(void)
struct sunxi_ccm_reg *const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;

- /* uart clock source is apb2 */
- writel(APB2_CLK_SRC_OSC24M|
- APB2_CLK_RATE_N_1|
- APB2_CLK_RATE_M(1),
- &ccm->apb2_div);
-
- /* open the clock for uart */
- setbits_le32(&ccm->apb2_gate,
- CLK_GATE_OPEN << (APB2_GATE_UART_SHIFT +
- CONFIG_CONS_INDEX - 1));
-
- /* deassert uart reset */
- setbits_le32(&ccm->apb2_reset_cfg,
- 1 << (APB2_RESET_UART_SHIFT +
- CONFIG_CONS_INDEX - 1));
+ if (IS_ENABLED(CONFIG_MACH_SUNIV)) {
+ /* suniv doesn't have apb2, so uart clock source is apb1 */
+ writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg);
+ while (!(readl(&ccm->pll6_cfg) & CCM_PLL6_CTRL_LOCK))
+ ;
+
+ /* open the clock for uart */
+ setbits_le32(&ccm->apb1_gate,
+ CLK_GATE_OPEN << (APB1_GATE_UART_SHIFT +
+ CONFIG_CONS_INDEX - 1));
+
+ /* deassert uart reset */
+ setbits_le32(&ccm->apb1_reset_cfg,
+ 1 << (APB1_RESET_UART_SHIFT +
+ CONFIG_CONS_INDEX - 1));
+ } else {
+ /* uart clock source is apb2 */
+ writel(APB2_CLK_SRC_OSC24M|
+ APB2_CLK_RATE_N_1|
+ APB2_CLK_RATE_M(1),
+ &ccm->apb2_div);
+
+ /* open the clock for uart */
+ setbits_le32(&ccm->apb2_gate,
+ CLK_GATE_OPEN << (APB2_GATE_UART_SHIFT +
+ CONFIG_CONS_INDEX - 1));
+
+ /* deassert uart reset */
+ setbits_le32(&ccm->apb2_reset_cfg,
+ 1 << (APB2_RESET_UART_SHIFT +
+ CONFIG_CONS_INDEX - 1));
+ }
#else
/* enable R_PIO and R_UART clocks, and de-assert resets */
prcm_apb0_enable(PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_UART);
@@ -125,10 +145,15 @@ void clock_set_pll1(unsigned int clk)
}

/* Switch to 24MHz clock while changing PLL1 */
- writel(AXI_DIV_3 << AXI_DIV_SHIFT |
- ATB_DIV_2 << ATB_DIV_SHIFT |
- CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT,
- &ccm->cpu_axi_cfg);
+ if (IS_ENABLED(CONFIG_MACH_SUNIV)) {
+ writel(CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT,
+ &ccm->cpu_axi_cfg);
+ } else {
+ writel(AXI_DIV_3 << AXI_DIV_SHIFT |
+ ATB_DIV_2 << ATB_DIV_SHIFT |
+ CPU_CLK_SRC_OSC24M << CPU_CLK_SRC_SHIFT,
+ &ccm->cpu_axi_cfg);
+ }

/*
* sun6i: PLL1 rate = ((24000000 * n * k) >> 0) / m (p is ignored)
@@ -140,10 +165,15 @@ void clock_set_pll1(unsigned int clk)
sdelay(200);

/* Switch CPU to PLL1 */
- writel(AXI_DIV_3 << AXI_DIV_SHIFT |
- ATB_DIV_2 << ATB_DIV_SHIFT |
- CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT,
- &ccm->cpu_axi_cfg);
+ if (IS_ENABLED(CONFIG_MACH_SUNIV)) {
+ writel(CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT,
+ &ccm->cpu_axi_cfg);
+ } else {
+ writel(AXI_DIV_3 << AXI_DIV_SHIFT |
+ ATB_DIV_2 << ATB_DIV_SHIFT |
+ CPU_CLK_SRC_PLL1 << CPU_CLK_SRC_SHIFT,
+ &ccm->cpu_axi_cfg);
+ }
}
#endif

@@ -317,7 +347,10 @@ unsigned int clock_get_pll6(void)
uint32_t rval = readl(&ccm->pll6_cfg);
int n = ((rval & CCM_PLL6_CTRL_N_MASK) >> CCM_PLL6_CTRL_N_SHIFT) + 1;
int k = ((rval & CCM_PLL6_CTRL_K_MASK) >> CCM_PLL6_CTRL_K_SHIFT) + 1;
- return 24000000 * n * k / 2;
+ if (IS_ENABLED(CONFIG_MACH_SUNIV))
+ return 24000000 * n * k;
+ else
+ return 24000000 * n * k / 2;
}

unsigned int clock_get_mipi_pll(void)
diff --git a/arch/arm/mach-sunxi/cpu_info.c b/arch/arm/mach-sunxi/cpu_info.c
index ba33ef2430..7eef178859 100644
--- a/arch/arm/mach-sunxi/cpu_info.c
+++ b/arch/arm/mach-sunxi/cpu_info.c
@@ -57,6 +57,8 @@ int print_cpuinfo(void)
{
#ifdef CONFIG_MACH_SUN4I
puts("CPU: Allwinner A10 (SUN4I)\n");
+#elif defined CONFIG_MACH_SUNIV
+ puts("CPU: Allwinner F Series (SUNIV)\n");
#elif defined CONFIG_MACH_SUN5I
u32 val = readl(SUNXI_SID_BASE + 0x08);
switch ((val >> 12) & 0xf) {
--
2.34.1