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https://github.com/Atmosphere-NX/Atmosphere.git
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Boot: Implement initial GPIO configuration
This commit is contained in:
hexkyz
GitHub
parent
0807aaea2b
commit
5025ba5e82
@ -6,7 +6,11 @@
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#include <switch.h>
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#include <stratosphere.hpp>
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#define GPIO_BASE 0x6000D000
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#define APB_MISC_BASE 0x70000000
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#define PINMUX_BASE (APB_MISC_BASE + 0x3000)
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#define PMC_BASE 0x7000E400
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#define MAX_GPIOS 0x3D
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extern "C" {
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extern u32 __start__;
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@ -61,18 +65,182 @@ void __appExit(void) {
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smExit();
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}
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static const std::tuple<u32, bool, bool> g_gpio_map[] = {
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std::make_tuple(0xFFFFFFFF, false, false), /* Invalid */
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std::make_tuple(0x000000CC, true, false), /* Port Z, Pin 4 */
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std::make_tuple(0x00000024, true, false), /* Port E, Pin 4 */
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std::make_tuple(0x0000003C, true, false), /* Port H, Pin 4 */
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std::make_tuple(0x000000DA, false, true), /* Port BB, Pin 2 */
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std::make_tuple(0x000000DB, true, false), /* Port BB, Pin 3 */
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std::make_tuple(0x000000DC, false, false), /* Port BB, Pin 4 */
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std::make_tuple(0x00000025, true, false), /* Port E, Pin 5 */
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std::make_tuple(0x00000090, false, false), /* Port S, Pin 0 */
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std::make_tuple(0x00000091, false, false), /* Port S, Pin 1 */
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std::make_tuple(0x00000096, true, false), /* Port S, Pin 6 */
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std::make_tuple(0x00000097, false, true), /* Port S, Pin 7 */
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std::make_tuple(0x00000026, false, false), /* Port E, Pin 6 */
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std::make_tuple(0x00000005, true, false), /* Port A, Pin 5 */
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std::make_tuple(0x00000078, false, false), /* Port P, Pin 0 */
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std::make_tuple(0x00000093, false, true), /* Port S, Pin 3 */
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std::make_tuple(0x0000007D, false, false), /* Port P, Pin 5 */
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std::make_tuple(0x0000007C, false, false), /* Port P, Pin 4 */
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std::make_tuple(0x0000007B, false, false), /* Port P, Pin 3 */
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std::make_tuple(0x0000007A, false, false), /* Port P, Pin 2 */
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std::make_tuple(0x000000BC, false, true), /* Port X, Pin 4 */
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std::make_tuple(0x000000AE, false, false), /* Port V, Pin 6 */
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std::make_tuple(0x000000BA, false, false), /* Port X, Pin 2 */
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std::make_tuple(0x000000B9, false, true), /* Port X, Pin 1 */
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std::make_tuple(0x000000BD, false, false), /* Port X, Pin 5 */
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std::make_tuple(0x000000BE, false, true), /* Port X, Pin 6 */
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std::make_tuple(0x000000BF, false, true), /* Port X, Pin 7 */
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std::make_tuple(0x000000C0, false, true), /* Port Y, Pin 0 */
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std::make_tuple(0x000000C1, false, false), /* Port Y, Pin 1 */
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std::make_tuple(0x000000A9, true, false), /* Port V, Pin 1 */
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std::make_tuple(0x000000AA, true, false), /* Port V, Pin 2 */
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std::make_tuple(0x00000055, true, false), /* Port K, Pin 5 */
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std::make_tuple(0x000000AD, true, false), /* Port V, Pin 5 */
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std::make_tuple(0x000000C8, false, true), /* Port Z, Pin 0 */
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std::make_tuple(0x000000CA, false, false), /* Port Z, Pin 2 */
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std::make_tuple(0x000000CB, false, true), /* Port Z, Pin 3 */
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std::make_tuple(0x0000004F, true, false), /* Port J, Pin 7 */
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std::make_tuple(0x00000050, false, false), /* Port K, Pin 0 */
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std::make_tuple(0x00000051, false, false), /* Port K, Pin 1 */
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std::make_tuple(0x00000052, false, false), /* Port K, Pin 2 */
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std::make_tuple(0x00000054, false, true), /* Port K, Pin 4 */
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std::make_tuple(0x00000056, false, true), /* Port K, Pin 6 */
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std::make_tuple(0x00000057, false, true), /* Port K, Pin 7 */
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std::make_tuple(0x00000053, true, false), /* Port K, Pin 3 */
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std::make_tuple(0x000000E3, true, false), /* Port CC, Pin 3 */
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std::make_tuple(0x00000038, true, false), /* Port H, Pin 0 */
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std::make_tuple(0x00000039, true, false), /* Port H, Pin 1 */
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std::make_tuple(0x0000003B, true, false), /* Port H, Pin 3 */
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std::make_tuple(0x0000003D, false, false), /* Port H, Pin 5 */
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std::make_tuple(0x0000003F, true, false), /* Port H, Pin 7 */
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std::make_tuple(0x00000040, true, false), /* Port I, Pin 0 */
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std::make_tuple(0x00000041, true, false), /* Port I, Pin 1 */
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std::make_tuple(0x0000003E, false, false), /* Port H, Pin 6 */
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std::make_tuple(0x000000E2, false, true), /* Port CC, Pin 2 */
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std::make_tuple(0x000000E4, true, false), /* Port CC, Pin 4 */
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std::make_tuple(0x0000003A, false, false), /* Port H, Pin 2 */
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std::make_tuple(0x000000C9, false, true), /* Port Z, Pin 1 */
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std::make_tuple(0x0000004D, true, false), /* Port J, Pin 5 */
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std::make_tuple(0x00000058, true, false), /* Port L, Pin 0 */
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std::make_tuple(0x0000003E, false, false), /* Port H, Pin 6 */
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std::make_tuple(0x00000026, false, false), /* Port E, Pin 6 */
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std::make_tuple(0xFFFFFFFF, false, false), /* Invalid */
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std::make_tuple(0x00000033, false, false), /* Port G, Pin 3 */
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std::make_tuple(0x0000001C, false, false), /* Port D, Pin 4 */
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std::make_tuple(0x000000D9, false, false), /* Port BB, Pin 1 */
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std::make_tuple(0x0000000C, false, false), /* Port B, Pin 4 */
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std::make_tuple(0x0000000D, false, false), /* Port B, Pin 5 */
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std::make_tuple(0x00000021, false, false), /* Port E, Pin 1 */
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std::make_tuple(0x00000027, false, false), /* Port E, Pin 7 */
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std::make_tuple(0x00000092, false, false), /* Port S, Pin 2 */
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std::make_tuple(0x00000095, false, false), /* Port S, Pin 5 */
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std::make_tuple(0x00000098, false, false), /* Port T, Pin 0 */
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std::make_tuple(0x00000010, false, false), /* Port C, Pin 0 */
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std::make_tuple(0x00000011, false, false), /* Port C, Pin 1 */
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std::make_tuple(0x00000012, false, false), /* Port C, Pin 2 */
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std::make_tuple(0x00000042, false, false), /* Port I, Pin 2 */
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std::make_tuple(0x000000E6, false, false), /* Port CC, Pin 6 */
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};
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int gpio_configure(unsigned int gpio_pad_name) {
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/* Fetch this GPIO's pad descriptor */
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u32 gpio_pad_desc = std::get<0>(g_gpio_map[gpio_pad_name]);
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/* Convert the GPIO pad descriptor into its register offset */
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u32 gpio_reg_offset = (((gpio_pad_desc << 0x03) & 0xFFFFFF00) | ((gpio_pad_desc >> 0x01) & 0x0C));
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/* Extract the bit and lock values from the GPIO pad descriptor */
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u32 gpio_cnf_val = ((0x01 << ((gpio_pad_desc & 0x07) | 0x08)) | (0x01 << (gpio_pad_desc & 0x07)));
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/* Write to the appropriate GPIO_CNF_x register (upper offset) */
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*((u32 *)gpio_base_vaddr + gpio_reg_offset + 0x80) = gpio_cnf_val;
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/* Do a dummy read from GPIO_CNF_x register (lower offset) */
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gpio_cnf_val = *((u32 *)gpio_base_vaddr + gpio_reg_offset);
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return gpio_cnf_val;
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}
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int gpio_set_direction(unsigned int gpio_pad_name) {
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/* Fetch this GPIO's pad descriptor */
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u32 gpio_pad_desc = std::get<0>(g_gpio_map[gpio_pad_name]);
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/* Fetch this GPIO's direction */
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bool is_out = std::get<1>(g_gpio_map[gpio_pad_name]);
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/* Convert the GPIO pad descriptor into its register offset */
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u32 gpio_reg_offset = (((gpio_pad_desc << 0x03) & 0xFFFFFF00) | ((gpio_pad_desc >> 0x01) & 0x0C));
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/* Set the direction bit and lock values (bug?) */
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u32 gpio_oe_val = ((0x01 << ((gpio_pad_desc & 0x07) | 0x08)) | (is_out << (gpio_pad_desc & 0x07)));
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/* Write to the appropriate GPIO_OE_x register (upper offset) */
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*((u32 *)gpio_base_vaddr + gpio_reg_offset + 0x90) = gpio_oe_val;
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/* Do a dummy read from GPIO_OE_x register (lower offset) */
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gpio_oe_val = *((u32 *)gpio_base_vaddr + gpio_reg_offset);
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return gpio_oe_val;
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}
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int gpio_set_output(unsigned int gpio_pad_name) {
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/* Fetch this GPIO's pad descriptor */
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u32 gpio_pad_desc = std::get<0>(g_gpio_map[gpio_pad_name]);
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/* Fetch this GPIO's output value */
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bool is_high = std::get<2>(g_gpio_map[gpio_pad_name]);
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/* Convert the GPIO pad descriptor into its register offset */
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u32 gpio_reg_offset = (((gpio_pad_desc << 0x03) & 0xFFFFFF00) | ((gpio_pad_desc >> 0x01) & 0x0C));
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/* Set the output bit and lock values (bug?) */
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u32 gpio_out_val = ((0x01 << ((gpio_pad_desc & 0x07) | 0x08)) | (is_high << (gpio_pad_desc & 0x07)));
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/* Write to the appropriate GPIO_OUT_x register (upper offset) */
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*((u32 *)gpio_base_vaddr + gpio_reg_offset + 0xA0) = gpio_out_val;
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/* Do a dummy read from GPIO_OUT_x register (lower offset) */
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gpio_out_val = *((u32 *)gpio_base_vaddr + gpio_reg_offset);
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return gpio_out_val;
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}
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int main(int argc, char **argv)
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{
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consoleDebugInit(debugDevice_SVC);
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Result rc;
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u64* pinmux_base_vaddr = NULL;
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u64* gpio_base_vaddr = NULL;
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u64* pmc_base_vaddr = NULL;
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/* Map the APB MISC registers for PINMUX */
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rc = svcQueryIoMapping(pinmux_base_vaddr, APB_MISC_BASE, 0x4000);
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if (R_FAILED(rc)) {
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return rc;
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}
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/* IO mapping failed */
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if (!pinmux_base_vaddr)
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fatalSimple(MAKERESULT(Module_Libnx, LibnxError_IoError));
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/* Map the GPIO registers */
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rc = svcQueryIoMapping(gpio_base_vaddr, GPIO_BASE, 0x1000);
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if (R_FAILED(rc)) {
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return rc;
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}
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/* IO mapping failed */
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if (!gpio_base_vaddr)
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fatalSimple(MAKERESULT(Module_Libnx, LibnxError_IoError));
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/* Change GPIO voltage to 1.8v */
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if (kernelAbove200()) {
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/* TODO: svcReadWriteRegister */
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} else {
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u64* pmc_base_vaddr = NULL;
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/* Map the PMC registers directly */
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rc = svcQueryIoMapping(pmc_base_vaddr, PMC_BASE, 0x3000);
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if (R_FAILED(rc)) {
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@ -83,14 +251,23 @@ int main(int argc, char **argv)
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if (!pmc_base_vaddr)
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fatalSimple(MAKERESULT(Module_Libnx, LibnxError_IoError));
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/* Update PMC_PWR_DET_ENABLE and PMC_PWR_DET_VAL */
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/* Write to APBDEV_PMC_PWR_DET_0 */
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*((u32 *)pmc_base_vaddr + 0x48) |= 0x00A42000;
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/* Write to APBDEV_PMC_PWR_DET_VAL_0 */
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*((u32 *)pmc_base_vaddr + 0xE4) &= 0xFF5BDFFF;
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}
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/* Wait for changes to take effect */
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svcSleepThread(100000);
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/* Setup all GPIOs from 0x01 to 0x3C */
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for (unsigned int i = 1; i < MAX_GPIOS; i++) {
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gpio_configure(i);
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gpio_set_direction(i);
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gpio_set_output(i);
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}
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/* TODO: Hardware setup, NAND repair, NotifyBootFinished */
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rc = 0;
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