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skip bootloader

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Polprzewodnikowy 2021-09-13 22:16:19 +02:00
parent bb5035570a
commit ea42b286af
4 changed files with 34 additions and 20 deletions
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11
fw/rtl/cpu/cpu_cfg.sv
View File

@ -4,6 +4,8 @@ module cpu_cfg (
if_config.cpu cfg if_config.cpu cfg
); );
logic skip_bootloader;
typedef enum bit [2:0] { typedef enum bit [2:0] {
R_SCR, R_SCR,
R_DD_OFFSET, R_DD_OFFSET,
@ -30,7 +32,8 @@ module cpu_cfg (
cfg.cpu_busy, cfg.cpu_busy,
cfg.usb_waiting, cfg.usb_waiting,
cfg.cmd_error, cfg.cmd_error,
22'd0, 21'd0,
skip_bootloader,
cfg.flashram_enabled, cfg.flashram_enabled,
cfg.sram_banked, cfg.sram_banked,
cfg.sram_enabled, cfg.sram_enabled,
@ -72,9 +75,10 @@ module cpu_cfg (
cfg.flashram_enabled <= 1'b0; cfg.flashram_enabled <= 1'b0;
cfg.dd_offset <= 26'h3BE_0000; cfg.dd_offset <= 26'h3BE_0000;
cfg.save_offset <= 26'h3FE_0000; cfg.save_offset <= 26'h3FE_0000;
skip_bootloader <= 1'b0;
end else begin end else begin
if (sys.n64_soft_reset) begin if (sys.n64_soft_reset) begin
cfg.sdram_switch <= 1'b0; cfg.sdram_switch <= skip_bootloader;
cfg.sdram_writable <= 1'b0; cfg.sdram_writable <= 1'b0;
end end
if (cfg.cmd_request) begin if (cfg.cmd_request) begin
@ -93,13 +97,14 @@ module cpu_cfg (
end end
if (bus.wmask[0]) begin if (bus.wmask[0]) begin
{ {
skip_bootloader,
cfg.flashram_enabled, cfg.flashram_enabled,
cfg.sram_banked, cfg.sram_banked,
cfg.sram_enabled, cfg.sram_enabled,
cfg.dd_enabled, cfg.dd_enabled,
cfg.sdram_writable, cfg.sdram_writable,
cfg.sdram_switch cfg.sdram_switch
} <= bus.wdata[5:0]; } <= bus.wdata[6:0];
end end
end end

1
sw/n64/src/sc64.h
View File

@ -21,6 +21,7 @@ enum cfg_id {
CFG_ID_TV_TYPE, CFG_ID_TV_TYPE,
CFG_ID_SAVE_OFFEST, CFG_ID_SAVE_OFFEST,
CFG_ID_DD_OFFEST, CFG_ID_DD_OFFEST,
CFG_ID_SKIP_BOOTLOADER,
}; };

37
sw/riscv/src/cfg.c
View File

@ -24,6 +24,7 @@ enum cfg_id {
CFG_ID_TV_TYPE, CFG_ID_TV_TYPE,
CFG_ID_SAVE_OFFEST, CFG_ID_SAVE_OFFEST,
CFG_ID_DD_OFFEST, CFG_ID_DD_OFFEST,
CFG_ID_SKIP_BOOTLOADER,
}; };
enum save_type { enum save_type {
@ -46,18 +47,18 @@ struct process {
static struct process p; static struct process p;
static void scr_set_bit (uint32_t mask) { static void change_scr_bits (uint32_t mask, bool value) {
if (value) {
CFG->SCR |= mask; CFG->SCR |= mask;
} } else {
static void scr_clr_bit (uint32_t mask) {
CFG->SCR &= ~(mask); CFG->SCR &= ~(mask);
}
} }
static void set_save_type (enum save_type save_type) { static void set_save_type (enum save_type save_type) {
uint32_t save_offset = DEFAULT_SAVE_OFFSET; uint32_t save_offset = DEFAULT_SAVE_OFFSET;
scr_clr_bit(CFG_SCR_FLASHRAM_EN | CFG_SCR_SRAM_BANKED | CFG_SCR_SRAM_EN); change_scr_bits(CFG_SCR_FLASHRAM_EN | CFG_SCR_SRAM_BANKED | CFG_SCR_SRAM_EN, false);
joybus_set_eeprom(EEPROM_NONE); joybus_set_eeprom(EEPROM_NONE);
switch (save_type) { switch (save_type) {
@ -73,19 +74,19 @@ static void set_save_type (enum save_type save_type) {
break; break;
case SAVE_TYPE_SRAM: case SAVE_TYPE_SRAM:
save_offset = SDRAM_SIZE - SAVE_SIZE_SRAM; save_offset = SDRAM_SIZE - SAVE_SIZE_SRAM;
CFG->SCR |= CFG_SCR_SRAM_EN; change_scr_bits(CFG_SCR_SRAM_EN, true);
break; break;
case SAVE_TYPE_FLASHRAM: case SAVE_TYPE_FLASHRAM:
save_offset = SDRAM_SIZE - SAVE_SIZE_FLASHRAM; save_offset = SDRAM_SIZE - SAVE_SIZE_FLASHRAM;
CFG->SCR |= CFG_SCR_FLASHRAM_EN; change_scr_bits(CFG_SCR_FLASHRAM_EN, true);
break; break;
case SAVE_TYPE_SRAM_BANKED: case SAVE_TYPE_SRAM_BANKED:
save_offset = SDRAM_SIZE - SAVE_SIZE_SRAM_BANKED; save_offset = SDRAM_SIZE - SAVE_SIZE_SRAM_BANKED;
CFG->SCR |= CFG_SCR_SRAM_BANKED | CFG_SCR_SRAM_EN; change_scr_bits(CFG_SCR_SRAM_BANKED | CFG_SCR_SRAM_EN, true);
break; break;
case SAVE_TYPE_FLASHRAM_PKST2: case SAVE_TYPE_FLASHRAM_PKST2:
save_offset = SAVE_OFFSET_PKST2; save_offset = SAVE_OFFSET_PKST2;
CFG->SCR |= CFG_SCR_FLASHRAM_EN; change_scr_bits(CFG_SCR_FLASHRAM_EN, true);
break; break;
default: default:
break; break;
@ -103,13 +104,13 @@ void cfg_update (uint32_t *args) {
CFG->SCR = args[1]; CFG->SCR = args[1];
break; break;
case CFG_ID_SDRAM_SWITCH: case CFG_ID_SDRAM_SWITCH:
(args[1] ? scr_set_bit : scr_clr_bit)(CFG_SCR_SDRAM_SWITCH); change_scr_bits(CFG_SCR_SDRAM_SWITCH, args[1]);
break; break;
case CFG_ID_SDRAM_WRITABLE: case CFG_ID_SDRAM_WRITABLE:
(args[1] ? scr_set_bit : scr_clr_bit)(CFG_SCR_SDRAM_WRITABLE); change_scr_bits(CFG_SCR_SDRAM_WRITABLE, args[1]);
break; break;
case CFG_ID_DD_ENABLE: case CFG_ID_DD_ENABLE:
(args[1] ? scr_set_bit : scr_clr_bit)(CFG_SCR_DD_EN); change_scr_bits(CFG_SCR_DD_EN, args[1]);
break; break;
case CFG_ID_SAVE_TYPE: case CFG_ID_SAVE_TYPE:
set_save_type((enum save_type)(args[1])); set_save_type((enum save_type)(args[1]));
@ -126,6 +127,9 @@ void cfg_update (uint32_t *args) {
case CFG_ID_DD_OFFEST: case CFG_ID_DD_OFFEST:
CFG->DD_OFFSET = args[1]; CFG->DD_OFFSET = args[1];
break; break;
case CFG_ID_SKIP_BOOTLOADER:
change_scr_bits(CFG_SCR_SKIP_BOOTLOADER, args[1]);
break;
} }
} }
@ -158,6 +162,9 @@ void cfg_query (uint32_t *args) {
case CFG_ID_DD_OFFEST: case CFG_ID_DD_OFFEST:
args[1] = CFG->DD_OFFSET; args[1] = CFG->DD_OFFSET;
break; break;
case CFG_ID_SKIP_BOOTLOADER:
args[1] = CFG->SCR & CFG_SCR_SKIP_BOOTLOADER;
break;
} }
} }
@ -175,7 +182,7 @@ void process_cfg (void) {
uint32_t args[2]; uint32_t args[2];
if (CFG->SCR & CFG_SCR_CPU_BUSY) { if (CFG->SCR & CFG_SCR_CPU_BUSY) {
scr_clr_bit(CFG_SCR_CMD_ERROR); change_scr_bits(CFG_SCR_CMD_ERROR, false);
args[0] = CFG->DATA[0]; args[0] = CFG->DATA[0];
args[1] = CFG->DATA[1]; args[1] = CFG->DATA[1];
@ -190,13 +197,13 @@ void process_cfg (void) {
break; break;
default: default:
scr_set_bit(CFG_SCR_CMD_ERROR); change_scr_bits(CFG_SCR_CMD_ERROR, true);
break; break;
} }
CFG->DATA[0] = args[0]; CFG->DATA[0] = args[0];
CFG->DATA[1] = args[1]; CFG->DATA[1] = args[1];
scr_clr_bit(CFG_SCR_CPU_BUSY); change_scr_bits(CFG_SCR_CPU_BUSY, false);
} }
} }

1
sw/riscv/src/sys.h
View File

@ -109,6 +109,7 @@ typedef volatile struct cfg_regs {
#define CFG_SCR_SRAM_EN (1 << 3) #define CFG_SCR_SRAM_EN (1 << 3)
#define CFG_SCR_SRAM_BANKED (1 << 4) #define CFG_SCR_SRAM_BANKED (1 << 4)
#define CFG_SCR_FLASHRAM_EN (1 << 5) #define CFG_SCR_FLASHRAM_EN (1 << 5)
#define CFG_SCR_SKIP_BOOTLOADER (1 << 6)
#define CFG_SCR_CMD_ERROR (1 << 28) #define CFG_SCR_CMD_ERROR (1 << 28)
#define CFG_SCR_USB_WAITING (1 << 29) #define CFG_SCR_USB_WAITING (1 << 29)
#define CFG_SCR_CPU_BUSY (1 << 30) #define CFG_SCR_CPU_BUSY (1 << 30)