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thermosphere: major refactor of memory map

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- use recursive stage 1 page table (thanks @fincs for this idea)
- NULL now unmapped
- no identity mapping
- image + GICv2 now mapped at the same address for every platform
- tempbss mapped just after "real" bss, can now steal unused mem from
the latter
- no hardcoded VAs for other MMIO devices
- tegra: remove timers, use the generic timer instead
This commit is contained in:
TuxSH
2020-01-17 22:10:26 +00:00
parent 92a291cd41
commit 626f0ecb98
47 changed files with 795 additions and 469 deletions
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13
thermosphere/src/irq.h
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@@ -21,6 +21,7 @@
#include "exceptions.h"
#include "utils.h"
#include "platform/interrupt_config.h"
#include "memory_map.h"
#define IRQ_PRIORITY_HOST 0
#define IRQ_PRIORITY_GUEST 1
@@ -29,13 +30,11 @@
typedef struct IrqManager {
RecursiveSpinlock lock;
ArmGicV2 gic;
u16 numSharedInterrupts;
u8 priorityShift;
u8 numPriorityLevels;
u8 numCpuInterfaces;
u8 numListRegisters;
// Note: we don't store interrupt handlers since we will handle some SGI + uart interrupt(s)...
} IrqManager;
typedef enum ThermosphereSgi {
@@ -46,6 +45,10 @@ typedef enum ThermosphereSgi {
ThermosphereSgi_Max,
} ThermosphereSgi;
static volatile ArmGicV2Distributor *const gicd = (volatile ArmGicV2Distributor *)MEMORY_MAP_VA_GICD;
static volatile ArmGicV2Controller *const gicc = (volatile ArmGicV2Controller *)MEMORY_MAP_VA_GICC;
static volatile ArmGicV2VirtualInterfaceController *const gich = (volatile ArmGicV2VirtualInterfaceController *)MEMORY_MAP_VA_GICH;
extern IrqManager g_irqManager;
void initIrq(void);
@@ -56,17 +59,17 @@ void handleIrqException(ExceptionStackFrame *frame, bool isLowerEl, bool isA32);
static inline void generateSgiForAllOthers(ThermosphereSgi id)
{
g_irqManager.gic.gicd->sgir = (1 << 24) | ((u32)id & 0xF);
gicd->sgir = (1 << 24) | ((u32)id & 0xF);
}
static inline void generateSgiForSelf(ThermosphereSgi id)
{
g_irqManager.gic.gicd->sgir = (2 << 24) | ((u32)id & 0xF);
gicd->sgir = (2 << 24) | ((u32)id & 0xF);
}
static inline void generateSgiForList(ThermosphereSgi id, u32 list)
{
g_irqManager.gic.gicd->sgir = (0 << 24) | (list << 16) | ((u32)id & 0xF);
gicd->sgir = (0 << 24) | (list << 16) | ((u32)id & 0xF);
}
static inline void generateSgiForAll(ThermosphereSgi id)