56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
#include <kernel/hardware/ubc.h>
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#include <kernel/hardware/power.h>
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#include <kernel/bits/driver.h>
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#include <kernel/util/extra.h>
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#include <string.h>
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// Internal hardware context
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struct __sh7305_ubc_context ubc_context;
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// Internal global
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int ubc_driver_is_installed = 0;
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//@note: we known that Casio doesn't use the UBC module
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static void sh7305_ubc_driver_install(void)
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{
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extern uint32_t vhex_dbr;
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extern uint32_t bubc_ram;
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extern uint32_t bubc_rom;
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extern uint32_t subc;
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// Check multiple installation
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if (ubc_driver_is_installed != 0)
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return;
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// Dump UBC handler
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memcpy(&bubc_ram, &bubc_rom, (size_t)&subc);
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// Set the DBR
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dbr_set(&vhex_dbr);
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// Start User Break Controller
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SH7305_POWER.MSTPCR0.UBC = 0;
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// Default initialization
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SH7305_UBC.CBR0.MFI = 0b000000;
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SH7305_UBC.CBR0.CE = 0;
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SH7305_UBC.CBR1.MFI = 0b000000;
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SH7305_UBC.CBR1.CE = 0;
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SH7305_UBC.CBCR.UBDE = 1;
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}
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static void sh7305_ubc_driver_uninstall(void)
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{
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// Nothing for now
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// TODO: Casio seems to stop UBC module when power off occur
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// SO, restore context if needed (?)
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}
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// Create driver object
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VHEX_DRIVER(3, driver_ubc_sh7305) = {
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.arch = MPU_SH7305,
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.install = &sh7305_ubc_driver_install,
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.uninstall = &sh7305_ubc_driver_uninstall,
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.name = "intc"
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};
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