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skip bootloader

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

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

@ -21,6 +21,7 @@ enum cfg_id {
CFG_ID_TV_TYPE,
CFG_ID_SAVE_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_SAVE_OFFEST,
CFG_ID_DD_OFFEST,
CFG_ID_SKIP_BOOTLOADER,
};
enum save_type {
@ -46,18 +47,18 @@ struct process {
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;
}
static void scr_clr_bit (uint32_t mask) {
} else {
CFG->SCR &= ~(mask);
}
}
static void set_save_type (enum save_type save_type) {
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);
switch (save_type) {
@ -73,19 +74,19 @@ static void set_save_type (enum save_type save_type) {
break;
case SAVE_TYPE_SRAM:
save_offset = SDRAM_SIZE - SAVE_SIZE_SRAM;
CFG->SCR |= CFG_SCR_SRAM_EN;
change_scr_bits(CFG_SCR_SRAM_EN, true);
break;
case SAVE_TYPE_FLASHRAM:
save_offset = SDRAM_SIZE - SAVE_SIZE_FLASHRAM;
CFG->SCR |= CFG_SCR_FLASHRAM_EN;
change_scr_bits(CFG_SCR_FLASHRAM_EN, true);
break;
case SAVE_TYPE_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;
case SAVE_TYPE_FLASHRAM_PKST2:
save_offset = SAVE_OFFSET_PKST2;
CFG->SCR |= CFG_SCR_FLASHRAM_EN;
change_scr_bits(CFG_SCR_FLASHRAM_EN, true);
break;
default:
break;
@ -103,13 +104,13 @@ void cfg_update (uint32_t *args) {
CFG->SCR = args[1];
break;
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;
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;
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;
case CFG_ID_SAVE_TYPE:
set_save_type((enum save_type)(args[1]));
@ -126,6 +127,9 @@ void cfg_update (uint32_t *args) {
case CFG_ID_DD_OFFEST:
CFG->DD_OFFSET = args[1];
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:
args[1] = CFG->DD_OFFSET;
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];
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[1] = CFG->DATA[1];
@ -190,13 +197,13 @@ void process_cfg (void) {
break;
default:
scr_set_bit(CFG_SCR_CMD_ERROR);
change_scr_bits(CFG_SCR_CMD_ERROR, true);
break;
}
CFG->DATA[0] = args[0];
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_BANKED (1 << 4)
#define CFG_SCR_FLASHRAM_EN (1 << 5)
#define CFG_SCR_SKIP_BOOTLOADER (1 << 6)
#define CFG_SCR_CMD_ERROR (1 << 28)
#define CFG_SCR_USB_WAITING (1 << 29)
#define CFG_SCR_CPU_BUSY (1 << 30)