diff options
Diffstat (limited to 'hw/ssi/aspeed_smc.c')
| -rw-r--r-- | hw/ssi/aspeed_smc.c | 177 |
1 files changed, 158 insertions, 19 deletions
diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c index 9ffc7e0117..f0c7bbbad3 100644 --- a/hw/ssi/aspeed_smc.c +++ b/hw/ssi/aspeed_smc.c @@ -30,6 +30,7 @@ #include "qemu/error-report.h" #include "qapi/error.h" #include "exec/address-spaces.h" +#include "qemu/units.h" #include "hw/irq.h" #include "hw/qdev-properties.h" @@ -50,7 +51,7 @@ #define CONF_FLASH_TYPE0 0 #define CONF_FLASH_TYPE_NOR 0x0 #define CONF_FLASH_TYPE_NAND 0x1 -#define CONF_FLASH_TYPE_SPI 0x2 +#define CONF_FLASH_TYPE_SPI 0x2 /* AST2600 is SPI only */ /* CE Control Register */ #define R_CE_CTRL (0x04 / 4) @@ -71,8 +72,11 @@ /* CEx Control Register */ #define R_CTRL0 (0x10 / 4) +#define CTRL_IO_QPI (1 << 31) +#define CTRL_IO_QUAD_DATA (1 << 30) #define CTRL_IO_DUAL_DATA (1 << 29) #define CTRL_IO_DUAL_ADDR_DATA (1 << 28) /* Includes dummies */ +#define CTRL_IO_QUAD_ADDR_DATA (1 << 28) /* Includes dummies */ #define CTRL_CMD_SHIFT 16 #define CTRL_CMD_MASK 0xff #define CTRL_DUMMY_HIGH_SHIFT 14 @@ -136,7 +140,7 @@ /* Misc Control Register #2 */ #define R_TIMINGS (0x94 / 4) -/* SPI controller registers and bits */ +/* SPI controller registers and bits (AST2400) */ #define R_SPI_CONF (0x00 / 4) #define SPI_CONF_ENABLE_W0 0 #define R_SPI_CTRL0 (0x4 / 4) @@ -211,6 +215,39 @@ static const AspeedSegments aspeed_segments_ast2500_spi2[] = { { 0x38000000, 32 * 1024 * 1024 }, /* start address is readonly */ { 0x3A000000, 96 * 1024 * 1024 }, /* end address is readonly */ }; +static uint32_t aspeed_smc_segment_to_reg(const AspeedSMCState *s, + const AspeedSegments *seg); +static void aspeed_smc_reg_to_segment(const AspeedSMCState *s, uint32_t reg, + AspeedSegments *seg); + +/* + * AST2600 definitions + */ +#define ASPEED26_SOC_FMC_FLASH_BASE 0x20000000 +#define ASPEED26_SOC_SPI_FLASH_BASE 0x30000000 +#define ASPEED26_SOC_SPI2_FLASH_BASE 0x50000000 + +static const AspeedSegments aspeed_segments_ast2600_fmc[] = { + { 0x0, 128 * MiB }, /* start address is readonly */ + { 0x0, 0 }, /* disabled */ + { 0x0, 0 }, /* disabled */ +}; + +static const AspeedSegments aspeed_segments_ast2600_spi1[] = { + { 0x0, 128 * MiB }, /* start address is readonly */ + { 0x0, 0 }, /* disabled */ +}; + +static const AspeedSegments aspeed_segments_ast2600_spi2[] = { + { 0x0, 128 * MiB }, /* start address is readonly */ + { 0x0, 0 }, /* disabled */ + { 0x0, 0 }, /* disabled */ +}; + +static uint32_t aspeed_2600_smc_segment_to_reg(const AspeedSMCState *s, + const AspeedSegments *seg); +static void aspeed_2600_smc_reg_to_segment(const AspeedSMCState *s, + uint32_t reg, AspeedSegments *seg); static const AspeedSMCController controllers[] = { { @@ -226,6 +263,8 @@ static const AspeedSMCController controllers[] = { .flash_window_size = 0x6000000, .has_dma = false, .nregs = ASPEED_SMC_R_SMC_MAX, + .segment_to_reg = aspeed_smc_segment_to_reg, + .reg_to_segment = aspeed_smc_reg_to_segment, }, { .name = "aspeed.fmc-ast2400", .r_conf = R_CONF, @@ -241,6 +280,8 @@ static const AspeedSMCController controllers[] = { .dma_flash_mask = 0x0FFFFFFC, .dma_dram_mask = 0x1FFFFFFC, .nregs = ASPEED_SMC_R_MAX, + .segment_to_reg = aspeed_smc_segment_to_reg, + .reg_to_segment = aspeed_smc_reg_to_segment, }, { .name = "aspeed.spi1-ast2400", .r_conf = R_SPI_CONF, @@ -254,6 +295,8 @@ static const AspeedSMCController controllers[] = { .flash_window_size = 0x10000000, .has_dma = false, .nregs = ASPEED_SMC_R_SPI_MAX, + .segment_to_reg = aspeed_smc_segment_to_reg, + .reg_to_segment = aspeed_smc_reg_to_segment, }, { .name = "aspeed.fmc-ast2500", .r_conf = R_CONF, @@ -269,6 +312,8 @@ static const AspeedSMCController controllers[] = { .dma_flash_mask = 0x0FFFFFFC, .dma_dram_mask = 0x3FFFFFFC, .nregs = ASPEED_SMC_R_MAX, + .segment_to_reg = aspeed_smc_segment_to_reg, + .reg_to_segment = aspeed_smc_reg_to_segment, }, { .name = "aspeed.spi1-ast2500", .r_conf = R_CONF, @@ -282,6 +327,8 @@ static const AspeedSMCController controllers[] = { .flash_window_size = 0x8000000, .has_dma = false, .nregs = ASPEED_SMC_R_MAX, + .segment_to_reg = aspeed_smc_segment_to_reg, + .reg_to_segment = aspeed_smc_reg_to_segment, }, { .name = "aspeed.spi2-ast2500", .r_conf = R_CONF, @@ -295,19 +342,64 @@ static const AspeedSMCController controllers[] = { .flash_window_size = 0x8000000, .has_dma = false, .nregs = ASPEED_SMC_R_MAX, + .segment_to_reg = aspeed_smc_segment_to_reg, + .reg_to_segment = aspeed_smc_reg_to_segment, + }, { + .name = "aspeed.fmc-ast2600", + .r_conf = R_CONF, + .r_ce_ctrl = R_CE_CTRL, + .r_ctrl0 = R_CTRL0, + .r_timings = R_TIMINGS, + .conf_enable_w0 = CONF_ENABLE_W0, + .max_slaves = 3, + .segments = aspeed_segments_ast2600_fmc, + .flash_window_base = ASPEED26_SOC_FMC_FLASH_BASE, + .flash_window_size = 0x10000000, + .has_dma = true, + .nregs = ASPEED_SMC_R_MAX, + .segment_to_reg = aspeed_2600_smc_segment_to_reg, + .reg_to_segment = aspeed_2600_smc_reg_to_segment, + }, { + .name = "aspeed.spi1-ast2600", + .r_conf = R_CONF, + .r_ce_ctrl = R_CE_CTRL, + .r_ctrl0 = R_CTRL0, + .r_timings = R_TIMINGS, + .conf_enable_w0 = CONF_ENABLE_W0, + .max_slaves = 2, + .segments = aspeed_segments_ast2600_spi1, + .flash_window_base = ASPEED26_SOC_SPI_FLASH_BASE, + .flash_window_size = 0x10000000, + .has_dma = false, + .nregs = ASPEED_SMC_R_MAX, + .segment_to_reg = aspeed_2600_smc_segment_to_reg, + .reg_to_segment = aspeed_2600_smc_reg_to_segment, + }, { + .name = "aspeed.spi2-ast2600", + .r_conf = R_CONF, + .r_ce_ctrl = R_CE_CTRL, + .r_ctrl0 = R_CTRL0, + .r_timings = R_TIMINGS, + .conf_enable_w0 = CONF_ENABLE_W0, + .max_slaves = 3, + .segments = aspeed_segments_ast2600_spi2, + .flash_window_base = ASPEED26_SOC_SPI2_FLASH_BASE, + .flash_window_size = 0x10000000, + .has_dma = false, + .nregs = ASPEED_SMC_R_MAX, + .segment_to_reg = aspeed_2600_smc_segment_to_reg, + .reg_to_segment = aspeed_2600_smc_reg_to_segment, }, }; /* - * The Segment Register uses a 8MB unit to encode the start address - * and the end address of the mapping window of a flash SPI slave : - * - * | byte 1 | byte 2 | byte 3 | byte 4 | - * +--------+--------+--------+--------+ - * | end | start | 0 | 0 | - * + * The Segment Registers of the AST2400 and AST2500 have a 8MB + * unit. The address range of a flash SPI slave is encoded with + * absolute addresses which should be part of the overall controller + * window. */ -static inline uint32_t aspeed_smc_segment_to_reg(const AspeedSegments *seg) +static uint32_t aspeed_smc_segment_to_reg(const AspeedSMCState *s, + const AspeedSegments *seg) { uint32_t reg = 0; reg |= ((seg->addr >> 23) & SEG_START_MASK) << SEG_START_SHIFT; @@ -315,12 +407,47 @@ static inline uint32_t aspeed_smc_segment_to_reg(const AspeedSegments *seg) return reg; } -static inline void aspeed_smc_reg_to_segment(uint32_t reg, AspeedSegments *seg) +static void aspeed_smc_reg_to_segment(const AspeedSMCState *s, + uint32_t reg, AspeedSegments *seg) { seg->addr = ((reg >> SEG_START_SHIFT) & SEG_START_MASK) << 23; seg->size = (((reg >> SEG_END_SHIFT) & SEG_END_MASK) << 23) - seg->addr; } +/* + * The Segment Registers of the AST2600 have a 1MB unit. The address + * range of a flash SPI slave is encoded with offsets in the overall + * controller window. The previous SoC AST2400 and AST2500 used + * absolute addresses. Only bits [27:20] are relevant and the end + * address is an upper bound limit. + */ +#define AST2600_SEG_ADDR_MASK 0x0ff00000 + +static uint32_t aspeed_2600_smc_segment_to_reg(const AspeedSMCState *s, + const AspeedSegments *seg) +{ + uint32_t reg = 0; + + /* Disabled segments have a nil register */ + if (!seg->size) { + return 0; + } + + reg |= (seg->addr & AST2600_SEG_ADDR_MASK) >> 16; /* start offset */ + reg |= (seg->addr + seg->size - 1) & AST2600_SEG_ADDR_MASK; /* end offset */ + return reg; +} + +static void aspeed_2600_smc_reg_to_segment(const AspeedSMCState *s, + uint32_t reg, AspeedSegments *seg) +{ + uint32_t start_offset = (reg << 16) & AST2600_SEG_ADDR_MASK; + uint32_t end_offset = reg & AST2600_SEG_ADDR_MASK; + + seg->addr = s->ctrl->flash_window_base + start_offset; + seg->size = end_offset + MiB - start_offset; +} + static bool aspeed_smc_flash_overlap(const AspeedSMCState *s, const AspeedSegments *new, int cs) @@ -333,7 +460,7 @@ static bool aspeed_smc_flash_overlap(const AspeedSMCState *s, continue; } - aspeed_smc_reg_to_segment(s->regs[R_SEG_ADDR0 + i], &seg); + s->ctrl->reg_to_segment(s, s->regs[R_SEG_ADDR0 + i], &seg); if (new->addr + new->size > seg.addr && new->addr < seg.addr + seg.size) { @@ -354,7 +481,7 @@ static void aspeed_smc_flash_set_segment(AspeedSMCState *s, int cs, AspeedSMCFlash *fl = &s->flashes[cs]; AspeedSegments seg; - aspeed_smc_reg_to_segment(new, &seg); + s->ctrl->reg_to_segment(s, new, &seg); /* The start address of CS0 is read-only */ if (cs == 0 && seg.addr != s->ctrl->flash_window_base) { @@ -362,7 +489,7 @@ static void aspeed_smc_flash_set_segment(AspeedSMCState *s, int cs, "%s: Tried to change CS0 start address to 0x%" HWADDR_PRIx "\n", s->ctrl->name, seg.addr); seg.addr = s->ctrl->flash_window_base; - new = aspeed_smc_segment_to_reg(&seg); + new = s->ctrl->segment_to_reg(s, &seg); } /* @@ -379,7 +506,7 @@ static void aspeed_smc_flash_set_segment(AspeedSMCState *s, int cs, HWADDR_PRIx "\n", s->ctrl->name, cs, seg.addr + seg.size); seg.size = s->ctrl->segments[cs].addr + s->ctrl->segments[cs].size - seg.addr; - new = aspeed_smc_segment_to_reg(&seg); + new = s->ctrl->segment_to_reg(s, &seg); } /* Keep the segment in the overall flash window */ @@ -455,8 +582,12 @@ static inline int aspeed_smc_flash_cmd(const AspeedSMCFlash *fl) const AspeedSMCState *s = fl->controller; int cmd = (s->regs[s->r_ctrl0 + fl->id] >> CTRL_CMD_SHIFT) & CTRL_CMD_MASK; - /* In read mode, the default SPI command is READ (0x3). In other - * modes, the command should necessarily be defined */ + /* + * In read mode, the default SPI command is READ (0x3). In other + * modes, the command should necessarily be defined + * + * TODO: add support for READ4 (0x13) on AST2600 + */ if (aspeed_smc_flash_mode(fl) == CTRL_READMODE) { cmd = SPI_OP_READ; } @@ -509,7 +640,7 @@ static uint32_t aspeed_smc_check_segment_addr(const AspeedSMCFlash *fl, const AspeedSMCState *s = fl->controller; AspeedSegments seg; - aspeed_smc_reg_to_segment(s->regs[R_SEG_ADDR0 + fl->id], &seg); + s->ctrl->reg_to_segment(s, s->regs[R_SEG_ADDR0 + fl->id], &seg); if ((addr % seg.size) != addr) { qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid address 0x%08x for CS%d segment : " @@ -769,7 +900,15 @@ static void aspeed_smc_reset(DeviceState *d) /* setup default segment register values for all */ for (i = 0; i < s->ctrl->max_slaves; ++i) { s->regs[R_SEG_ADDR0 + i] = - aspeed_smc_segment_to_reg(&s->ctrl->segments[i]); + s->ctrl->segment_to_reg(s, &s->ctrl->segments[i]); + } + + /* HW strapping flash type for the AST2600 controllers */ + if (s->ctrl->segments == aspeed_segments_ast2600_fmc) { + /* flash type is fixed to SPI for all */ + s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0); + s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE1); + s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE2); } /* HW strapping flash type for FMC controllers */ |